فإن الكتاب أن نعترف الدكتور بيرجيت فيرنر لمساعدتها على انتاج هذه المادة مع الفيديو. وقد تم تمويل هذا البحث من قبل على جائزة التوظيف جبهة الخلاص الوطني.

<ol>
	<li>Barlow, R. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Circadian+rhythms+in+the+Limulus+visual+system.">Circadian rhythms in the Limulus visual system.</a> J. Neurosci. 3, 856-870 (1983).</li><li>Passaglia, C. L., Dodge, F. A., Barlow, R. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cell+based+model+of+the+Limulus+lateral+eye.">Cell based model of the Limulus lateral eye.</a> J. Neurophysiol. 80, 1800-1815 (1998).</li><li>Snodderly, D. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Processing+of+visual+inputs+by+the+brain+of+Limulus.">Processing of visual inputs by the brain of Limulus.</a> J. Neurophysiol. 34, 588-611 (1971).</li><li>Passaglia, C., Dodge, F., Herzog, E., Jackson, S., Barlow, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Deciphering+a+neural+code+for+vision.">Deciphering a neural code for vision.</a> Proc. Natl. Acad. Sci. 94, 12649-12654 (1997).</li><li>Barlow, R. B., Kaplan, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Limulus+lateral+eye:+properties+of+receptor+units+in+the+unexcised+eye.">Limulus lateral eye: properties of receptor units in the unexcised eye.</a> Science. 174, 1027-1029 (1971).</li><li>Bolbecker, A. R., Lewis, A. R., Swan, A. A., Carlson, K., Fleet, J. R., Beck, K. E., Wasserman, G. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Stable+Bellows+Cup+Electrode+Demonstrates+Low-frequency+Properties+of+Long-term+Electroretinographic+Recordings+in+the+Limulus+Lateral+Eye.">Stable Bellows Cup Electrode Demonstrates Low-frequency Properties of Long-term Electroretinographic Recordings in the Limulus Lateral Eye.</a> J. Neurosci. Meth. 159, 252-260 (2007).</li></ol>

وقد بينت لنا كيفية تنفيذ تسجيلات أرج والتسجيلات العصب البصري ، وتسجيلات intraretinal على شكل حدوة حصان السرطانات في الجسم الحي. تقنيات تسجيل كل تقدم رؤى مختلفة في الأساس العصبي للرؤية ، ويمكن أن تستخدم كل ما لدراسة وظيفة في شبكية العين بفضل الحيوانات الحية لعيون السلطعون ?...

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		<th>Catalogue Number</th>
		<th>Comment</th>
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<td>LED</td>
<td>Light source</td>
<td>Newark Inc</td>
<td>33C1292</td>
<td>&nbsp;</td>
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<td>Suction electrode</td>
<td>Electrode</td>
<td>A-M Systems, Inc</td>
<td>573000</td>
<td>&nbsp;</td>
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<td>XCell 3*4-Channel Extracellular Amplifier</td>
<td>Amplifier</td>
<td>FHC Inc.</td>
<td>40-40-8B</td>
<td>&nbsp;</td>
<tr>
<td>Intracellular Recording</td>
<td>Amplifier</td>
<td>Cygnus</td>
<td>IR-283A</td>
<td>&nbsp;</td>
<tr>
<td>APM</td>
<td>Neural Spike Discriminator</td>
<td>FHC Inc.</td>
<td>APM</td>
<td>&nbsp;</td>
<tr>
<td>Bits++</td>
<td>Video Board</td>
<td>Cambridge Research Systems Inc</td>
<td>Bits++</td>
<td>&nbsp;</td>
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<td>Piezopatch Manipulator</td>
<td>Micropositioner</td>
<td>WPI Inc</td>
<td>PPM5000</td>
<td>&nbsp;</td>
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<td>Square Pulse Stimulator</td>
<td>Nerve Stimulator</td>
<td>Grass Instrument Division, Astro-Med, Inc.</td>
<td>Model S48</td>
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<td>P-97</td>
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<td>Sutter Instruments</td>
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<td>Horseshoe crab (Limulus polyphemus)</td>
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<td>Marine Biological Laboratories</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
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using the horseshoe crab, limulus polyphemus, in vision research

سلطعون الأمريكية حدوة حصان ، الليمول Polyphemus هو واحد من أقدم المخلوقات على وجه الأرض ، والحيوانات لا تزال تلعب دورا لا غنى عنه في مجال البحوث الطبية الحيوية. ليس فقط لا تحتوي على خلايا الدم الخاصة التي تستخدم للكشف العلماء bacteriotoxins في الأدوية لدينا ، ولكن عيونهم تحتوي أيضا على شبكة العصبية التي قدمت نظرة الكثير عن العمليات الفسيولوجية التي تعمل في نظامنا البصرية ، مثل التكيف مع الضوء وتثبيط الجانبية. سلطعون حدوة حصان لا تزال نموذجا جذابا للبحوث الرؤية لأن الحيوان الكبيرة وهاردي لاللافقارية ، الخلايا العصبية في الشبكية هي كبيرة ويمكن الوصول إليها بسهولة ، ونظامها البصرية المدمجة ودرس على نطاق واسع ، ويعرف جيدا سلوكها البصرية. وعلاوة على ذلك ، فإن هيكل وظيفة من وظائف العيون منظم على أساس يومي من الساعة اليومية في دماغ الحيوان ق. وباختصار ، فإن النظام البصري للسرطان حدوة بسيطة بما يكفي لتكون مفهومة حتى الآن معقدة بما يكفي لتكون مثيرة للاهتمام. في هذا الفيديو نقدم ثلاثة نماذج الكهربية عن التحقيق في الأساس العصبي للرؤية التي يمكن القيام بها في الجسم الحي مع الليمول. انهم تسجيل مخطط كهربية الشبكية ، العصب البصري تسجيل ، وتسجيل intraretinal. مخطط كهربية الشبكية (أرج) تسجيلات قياس مع سطح القطب لخص الاستجابة الكهربائية لجميع الخلايا في العين إلى ومضة من الضوء. يمكن استخدامها لرصد حساسية الشاملة للعين لإطالة فترات من الزمن. تسجيلات العصب البصري قياس النشاط المتصاعد من الألياف العصبية واحد مع إلكترود microsuction خارج الخلية. يمكن استخدامها لدراسة نقل الرسائل البصرية من العين إلى الدماغ وكذلك الإيقاعية على مدار الساعة رسائل يتم تغذيته من الدماغ إلى العين. Intraretinal تسجيلات قياس مع microelectrode الخلايا تقلبات الجهد الناجم عن ضوء في الخلايا الفردية من العين. يمكن استخدامها لتوضيح الآليات الخلوية معالجة الشبكية.

Watch this Scientific Journal Video about Using the Horseshoe Crab, Limulus Polyphemus, in Vision Research at JoVE.com

Using the Horseshoe Crab, Limulus Polyphemus, in Vision Research

في هذا الفيديو نقوم تسجيل مخطط كهربية الشبكية ، العصب البصري تسجيل ، وتسجيل intraretinal مع السلطعون على شكل حدوة حصان الأميركية ،<em&gt; الليمول Polyphemus</em&gt;. ويمكن استخدام هذه النماذج الكهربية عن التحقيق في الأساس العصبي للرؤية في مختبر البحوث أو التدريس.

باستخدام كراب حدوة الحصان ، الليمول Polyphemus ، في أبحاث الرؤية

The American horseshoe crab, Limulus Polyphemus is one of the oldest creatures on earth, and the animal continues to play an indispensable role in ...

using-the-horseshoe-crab-limulus-polyphemus-in-vision-research

Research

JoVE Journal

Biology

Using the Horseshoe Crab, Limulus Polyphemus, in Vision Research

14.2K Views.  Boston University. في هذا الفيديو نقوم تسجيل مخطط كهربية الشبكية ، العصب البصري تسجيل ، وتسجيل intraretinal مع السلطعون على شكل حدوة حصان الأميركية ، الليمول Polyphemus. ويمكن استخدام هذه النماذج الكهربية عن التحقيق في الأساس العصبي للرؤية في مختبر البحوث أو التدريس.

Video: Using the Horseshoe Crab, Limulus Polyphemus, in Vision Research

Blood Collection from the American Horseshoe Crab, Limulus Polyphemus

The horseshoe crab has the best-characterized immune system of any long-lived invertebrate. The study of immunity in horseshoe crabs has been facilitated by the ease in collecting large volumes of blood and from the simplicity of the blood. Horseshoe crabs show only a single cell type in the general circulation, the granular amebocyte. The plasma has the salt content of sea water and only three abundant proteins, hemocyanin, the respiratory protein, the C-reactive proteins, which function in the cytolytic destruction of foreign cells, including bacterial cells, and &alpha;2-macroglobulin, which inhibits the proteases of invading pathogens. Blood is collected by direct cardiac puncture under conditions that minimize contamination by lipopolysaccharide (a.k.a., endotoxin, LPS), a product of the Gram-negative bacteria. A large animal can yield 200 - 400 mL of blood. For the study of the plasma, blood cells are immediately removed from the plasma by centrifugation and the plasma can then be fractionated into its constituent proteins. The blood cells are conveniently studied microscopically by collecting small volumes of blood into LPS-free isotonic saline (0.5 M NaCl) under conditions that permit direct microscopic examination by placing one of more LPS-free coverglasses on the culture dish surface, then mounting those coverglasses in simple observation chambers following cell attachment. A second preparation for direct observation is to collect 3 - 5 mL of blood in a LPS-free embryo dish and then explanting fragments of aggregated amebocytes to a chamber that sandwiches the tissue between a slide and a coverglass. In this preparation, the motile amebocytes migrate onto the coverglass surface, where they can readily be observed. The blood clotting system involves aggregation of amebocytes and the formation of an extracellular clot of a protein, coagulin, which is released from the secretory granules of the blood cells. Biochemical analysis of washed blood cells requires that aggregation and degranulation does not occur, which can be accomplished by collecting blood into 0.1 volumes of 2% Tween-20, 0.5 M LPS-free NaCl, followed by centrifugation of the cells and washing with 0.5 M NaCl.

The American horseshoe crab, Limulus polyphemus, is arguably the most convenient source for large quantities of blood of any invertebrate. The blood is simple in composition, with only one cell-type in the general circulation, the granular amebocyte, and only three abundant proteins in the plasma, hemocyanin, the C-reactive proteins, and &alpha;2-macroglobulin. Blood is collected from the heart and the blood cells and plasma are separated by centrifugation.

كوكتيل من الدم والسرطان حدوة الحصان الأميركي ، الليمول Polyphemus

The horseshoe crab has the best-characterized immune system of any long-lived invertebrate.  The study of immunity in horseshoe crabs has been facilitated ...

Live Imaging of Apoptotic Cell Clearance during Drosophila Embryogenesis

The proper elimination of unwanted or aberrant cells through apoptosis and subsequent phagocytosis (apoptotic cell clearance) is crucial for normal development in all metazoan organisms. Apoptotic cell clearance is a highly dynamic process intimately associated with cell death; unengulfed apoptotic cells are barely seen in vivo under normal conditions. In order to understand the different steps of apoptotic cell clearance and to compare 'professional' phagocytes - macrophages and dendritic cells to 'non-professional' - tissue-resident neighboring cells, in vivo live imaging of the process is extremely valuable. Here we describe a protocol for studying apoptotic cell clearance in live Drosophila embryos. To follow the dynamics of different steps in phagocytosis we use specific markers for apoptotic cells and phagocytes. In addition, we can monitor two phagocyte systems in parallel: 'professional' macrophages and 'semi-professional' glia in the developing central nervous system (CNS). The method described here employs the Drosophila embryo as an excellent model for real time studies of apoptotic cell clearance.

Live Imaging of Apoptotic Cell Clearance during Drosophila Embryogenesis

Here we describe an effective method for studying dynamics of apoptotic cell clearance in vivo. This method employs live Drosophila embryos as a powerful model for monitoring phagocytosis of apoptotic cells using specific labeling of apoptotic cells and phagocytes.

يعيش التصوير من تخليص الخلية أفكارك أثناء<em&gt; ذبابة الفاكهة</em&gt; مرحلة التطور الجنيني

The  proper elimination of unwanted or aberrant cells through apoptosis and  subsequent phagocytosis (apoptotic cell clearance) is crucial for normal  ...

Using Caenorhabditis elegans as a Model System to Study Protein Homeostasis in a Multicellular Organism

The folding and assembly of proteins is essential for protein function, the long-term health of the cell, and longevity of the organism. Historically, the function and regulation of protein folding was studied in vitro, in isolated tissue culture cells and in unicellular organisms. Recent studies have uncovered links between protein homeostasis (proteostasis), metabolism, development, aging, and temperature-sensing. These findings have led to the development of new tools for monitoring protein folding in the model metazoan organism Caenorhabditis elegans. In our laboratory, we combine behavioral assays, imaging and biochemical approaches using temperature-sensitive or naturally occurring metastable proteins as sensors of the folding environment to monitor protein misfolding. Behavioral assays that are associated with the misfolding of a specific protein provide a simple and powerful readout for protein folding, allowing for the fast screening of genes and conditions that modulate folding. Likewise, such misfolding can be associated with protein mislocalization in the cell. Monitoring protein localization can, therefore, highlight changes in cellular folding capacity occurring in different tissues, at various stages of development and in the face of changing conditions. Finally, using biochemical tools ex vivo, we can directly monitor protein stability and conformation. Thus, by combining behavioral assays, imaging and biochemical techniques, we are able to monitor protein misfolding at the resolution of the organism, the cell, and the protein, respectively.

Using Caenorhabditis elegans as a Model System to Study Protein Homeostasis in a Multicellular Organism

To study the relationship between protein homeostasis, stress and aging, we monitored changes in protein folding by following protein dysfunction, protein localization in the cell and protein stability at the organismal, cellular and protein levels, using the genetically tractable metazoan Caenorhabditis elegans as a model system.

The folding and assembly of proteins is essential for protein function, the long-term health of the cell, and longevity of the organism. Historically, the ...

Sample Preparation for Metabolic Profiling using MALDI Mass Spectrometry Imaging

Metabolomics, the study to identify and quantify small molecules and metabolites present in an experimental sample, has emerged as an important tool to investigate the biological activities during development and diseases. Metabolomics approaches&#160;are widely employed in the study of cancer, nutrition/diet, diabetes, and other physiological and pathological conditions involving metabolic processes. An advantageous tool that aids in metabolomic profiling advocated in this paper is matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI MSI). Its ability to detect metabolites in situ without labeling, structural modifications, or other specialized reagents, such as those used in immunostaining, makes MALDI MSI a unique tool in advancing methodologies relevant in the field of metabolomics. An appropriate sample preparation process is critical to yield optimal results and will be the focus of this paper.

The goal of this protocol is to provide detailed guidance on the sample preparation when planning for experiments using MALDI MSI to maximize metabolic and molecular detection in biological samples.

إعداد عينة للتنميط الأيضي باستخدام التصوير الطيفي الشامل MALDI

Metabolomics, the study to identify and quantify small molecules and metabolites present in an experimental sample, has emerged as an important tool to ...

Determining the Toxicity of UV Radiation and Chemicals on Primary and Immortalized Human Corneal Epithelial Cells

This article describes the methods of measuring the toxicity of ultraviolet (UV) radiation and ocular toxins on primary (pHCEC) and immortalized (iHCEC) human corneal epithelial cell cultures. Cells were exposed to UV radiation and toxic doses of benzalkonium chloride (BAK), hydrogen peroxide (H2O2), and sodium dodecyl sulfate (SDS). Metabolic activity was measured using a metabolic assay. The release of inflammatory cytokines was measured using a multi-plex interleukin (IL)-1&#946;, IL-6, IL-8, and tumor necrosis factor-alpha (TNF-&#945;) assay, and cells were evaluated for viability using fluorescent dyes. 
The damaging effects of UV on cell metabolic activity and cytokine release occurred at 5 min of UV exposure for iHCEC and 20 min for pHCEC. Similar percent drops in metabolic activity of the iHCEC and pHCEC occurred after exposure to BAK, H2O2, or SDS, and the most significant changes in cytokine release occurred for IL-6 and IL-8. Microscopy of fluorescently stained iHCEC and pHCEC BAK-exposed cells showed cell death at 0.005% BAK exposure, although the degree of ethidium staining was greater in the iHCECs than pHCECs. Utilizing multiple methods of assessing toxic effects using microscopy, assessments of metabolic activity, and cytokine production, the toxicity of UV radiation and chemical toxins could be determined for both primary and immortalized cell lines.

This article describes the procedures used to evaluate the toxicity of UV radiation and chemical toxins on a primary and immortalized cell line.

تحديد سمية الأشعة فوق البنفسجية والمواد الكيميائية على الخلايا الظهارية القرنية البشرية الأولية والخالدة

This article describes the methods of measuring the toxicity of ultraviolet (UV) radiation and ocular toxins on primary (pHCEC) and immortalized (iHCEC) ...

Nitroreductase/Metronidazole-Mediated Ablation and a MATLAB Platform (RpEGEN) for Studying Regeneration of the Zebrafish Retinal Pigment Epithelium

The retinal pigment epithelium (RPE) resides at the back of the eye and performs functions essential for maintaining the health and integrity of adjacent retinal and vascular tissues. At present, the limited reparative capacity of mammalian RPE, which is restricted to small injuries, has hindered progress to understanding in vivo RPE regenerative processes. Here, a detailed methodology is provided to facilitate the study of in vivo RPE repair utilizing the zebrafish, a&#160;vertebrate model capable of robust tissue regeneration. This protocol describes a transgenic nitroreductase/metronidazole (NTR/MTZ)-mediated injury paradigm (rpe65a:nfsB-eGFP), which results in ablation of the central two-thirds of the RPE after 24 h treatment with MTZ, with subsequent tissue recovery. Focus is placed on RPE ablations in larval zebrafish and methods for testing the effects of pharmacological compounds on RPE regeneration are also outlined. Generation and validation of RpEGEN, a MATLAB script created to automate quantification of RPE regeneration based on pigmentation, is also discussed. Beyond active RPE repair mechanisms, this protocol can be expanded to studies of RPE degeneration and injury responses as well as the effects of RPE damage on adjacent retinal and vascular tissues, among other cellular and molecular processes. This zebrafish system holds significant promise in identifying genes, networks, and processes that drive RPE regeneration and RPE disease-related mechanisms, with the long-term goal of applying this knowledge to mammalian systems and, ultimately, toward therapeutic development.

Nitroreductase/Metronidazole-Mediated Ablation and a MATLAB Platform RpEGEN for Studying Regeneration of the Zebrafish Retinal Pigment Epithelium

This protocol describes the methodology to genetically ablate the retinal pigment epithelium (RPE) using a transgenic zebrafish model. Adapting the protocol to incorporate signaling pathway modulation using pharmacological compounds is extensively detailed. A MATLAB platform for quantifying RPE regeneration based on pigmentation was developed and is presented and discussed.

الاستئصال بوساطة النيتروكتاز / ميترونيدازول ومنصة MATLAB (RpEGEN) لدراسة تجديد صبغة شبكية الزرد

The retinal pigment epithelium (RPE) resides at the back of the eye and performs functions essential for maintaining the health and integrity of adjacent ...

التحقيق في آلية نقل الزنك في خلايا الثدييات باستخدام مقايسة FluoZin-3

Characterizing Mammalian Zinc Transporters Using an In Vitro Zinc Transport Assay

Transition metals such as Zn2+ ions must be tightly regulated due to their cellular toxicity. Previously, the activity of Zn2+ transporters was measured indirectly by determining the expression level of the transporter under different concentrations of Zn2+. This was done by utilizing immunohistochemistry, measuring mRNA in the tissue, or determining the cellular Zn2+ levels. With the development of intracellular Zn2+ sensors, the activities of zinc transporters are currently primarily determined by correlating changes in intracellular Zn2+, detected using fluorescent probes, with the expression of the Zn2+ transporters. However, even today, only a few labs monitor dynamic changes in intracellular Zn2+ and use it to measure the activity of zinc transporters directly. Part of the problem is that out of the 10 zinc transporters of the ZnT family, except for ZnT10 (transports manganese), only zinc transporter 1 (ZnT1) is localized at the plasma membrane. Therefore, linking the transport activity to changes in the intracellular Zn2+ concentration is hard. This article describes a direct way to determine the zinc transport kinetics using an assay based on a zinc-specific fluorescent dye, FluoZin-3. This dye is loaded into mammalian cells in its ester form and then trapped in the cytosol due to cellular di-esterase activity. The cells are loaded with Zn2+ by utilizing the Zn2+ ionophore pyrithione. The ZnT1 activity is assessed from the linear part of the reduction in fluorescence following the cell washout. The fluorescence measured at an excitation of 470 nm and emission of 520 nm is proportional to the free intracellular Zn2+. Selecting the cells expressing ZnT1 tagged with the mCherry fluorophore allows for monitoring only the cells expressing the transporter. This assay is used to investigate the contribution of different domains of ZnT1 protein to the transport mechanism of human ZnT1, a eukaryotic transmembrane protein that extrudes excess zinc from the cell.

تسليط الضوء على المؤلف: استكشاف تنظيم الزنك الخلوي من خلال وظائف ZnT1 

Zinc transport has proven challenging to measure due to the weak causal links to protein function and the low temporal resolution. This protocol describes a method for monitoring, with high temporal resolution, Zn2+ extrusion from living cells by utilizing a Zn2+ sensitive fluorescent dye, thus providing a direct measure of Zn2+ efflux.

توصيف ناقلات الزنك في الثدييات باستخدام مقايسة نقل الزنك في المختبر

Transition metals such as Zn2+ ions must be tightly regulated due to their cellular toxicity. Previously, the activity of Zn2+ transporters was measured ...

سير عمل TEM وتحليل النتائج وإدارة البيانات باستخدام نهج رؤية الآلة

A Machine-Vision Approach to Transmission Electron Microscopy Workflows, Results Analysis and Data Management

Transmission electron microscopy (TEM) enables users to study materials at their fundamental, atomic scale. Complex experiments routinely generate thousands of images with numerous parameters that require time-consuming and complicated analysis. AXON synchronicity is a machine-vision synchronization (MVS) software solution designed to address the pain points inherent to TEM studies. Once installed on the microscope, it enables the continuous synchronization of images and metadata generated by the microscope, detector, and in situ systems during an experiment. This connectivity enables the application of machine-vision algorithms that apply a combination of spatial, beam, and digital corrections to center and track a region of interest within the field of view and provide immediate image stabilization. In addition to the substantial improvement in resolution afforded by such stabilization, metadata synchronization enables the application of computational and image analysis algorithms that calculate&#8239;variables between images. This calculated metadata can be used to analyze trends or identify key areas of interest within a dataset, leading to new insights and the development of more sophisticated machine-vision capabilities in the future. One such module that builds on this calculated metadata is dose calibration and management. The dose module provides state-of-the-art calibration, tracking, and management of both the electron fluence (e-/&#197;2&#183;s-1) and cumulative dose (e-/&#197;2) that is delivered to specific areas of the sample on a pixel-by-pixel basis. This enables a comprehensive overview of the interaction between the electron beam and the sample. Experiment analysis is streamlined through a dedicated analysis software in which datasets consisting of images and corresponding metadata are easily visualized, sorted, filtered, and exported. Combined, these tools facilitate efficient collaborations and experimental analysis, encourage data mining and enhance the microscopy experience.

تسليط الضوء على المؤلف: نهج رؤية الآلة لسير عمل المجهر الإلكتروني النافذ وتحليل النتائج وإدارة البيانات  

Here, we present a protocol to utilize machine-vision software to stabilize dynamic processes during TEM imaging, while concurrently indexing multiple streams of metadata to each image into a navigable timeline. We demonstrate how this platform enables automated calibration and mapping of the electron dose over the course of an experiment.