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Tufts University School of Medicine

10 ARTICLES PUBLISHED IN JoVE

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Biology

Microinjection of Zebrafish Embryos to Analyze Gene Function
Jonathan N. Rosen 1,2, Michael F. Sweeney 1, John D. Mably 1,2
1Department of Genetics, Harvard Medical School, 2Department of Cardiology, Children’s Hospital Boston

This video shows how morpholino or mRNA can be injected into zebrafish embryos at the one-cell stage to decrease or increase the level of specific gene products during subsequent development.

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Biology

A 3D System for Culturing Human Articular Chondrocytes in Synovial Fluid
Joshua A. Brand 1, Timothy E. McAlindon 2, Li Zeng 1
1Department of Anatomy and Cellular Biology, Tufts University School of Medicine, 2Department of Rheumatology, Tufts Medical Center

A 3D system of culturing human articular chondrocytes in high levels of synovial fluid is described. Synovial fluid reflects the most natural microenvironment for articular cartilage, and can be easily obtained and stored. This system thus can be used for studying cartilage regeneration and for screening therapeutics for treating arthritis.

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Clinical Skills

Lymph Node Exam
Richard Glickman-Simon 1
1epartment of Public Health and Community Medicine, Tufts University School of Medicine

Lymph Node Exam

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Clinical Skills

Ophthalmoscopic Examination
Richard Glickman-Simon 1
1Department of Public Health and Community Medicine, Tufts University School of Medicine

Ophthalmoscopic Examination

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Clinical Skills

Ear Exam
Richard Glickman-Simon 1
1Department of Public Health and Community Medicine, Tufts University School of Medicine

Ear Exam

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Clinical Skills

Eye Exam
Richard Glickman-Simon 1
1Department of Public Health and Community Medicine, Tufts University School of Medicine

Eye Exam

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JoVE Journal

Mosaic Zebrafish Transgenesis for Functional Genomic Analysis of Candidate Cooperative Genes in Tumor Pathogenesis
Choong Yong Ung 1, Feng Guo 2, Xiaoling Zhang 3, Zhihui Zhu 3, Shizhen Zhu 1,3
1Department of Molecular Pharmacology & Experimental Therapeutics, Mayo Clinic College of Medicine, Center for Individualized Medicine, 2Tufts University School of Medicine, 3Department of Biochemistry and Molecular Biology, Mayo Clinic

The goal of this study is to demonstrate how the mosaic transgenesis strategy can be used in zebrafish to rapidly and efficiently assess the relative contributions of multiple oncogenes in tumor initiation and progression in vivo.

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Bioengineering

A Hormone-responsive 3D Culture Model of the Human Mammary Gland Epithelium
Lucia Speroni 1, Michael F. Sweeney 1, Carlos Sonnenschein 1, Ana M. Soto 1
1Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine

We describe a 3D culture model of the human breast epithelium that is suitable to study hormone action.

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Engineering

Microfluidic Fabrication Techniques for High-Pressure Testing of Microscale Supercritical CO2 Foam Transport in Fractured Unconventional Reservoirs
Hooman Hosseini 1, Feng Guo 2, Reza Barati Ghahfarokhi 1, Saman A. Aryana 2
1Department of Chemical and Petroleum Engineering, University of Kansas, 2Department of Chemical Engineering, University of Wyoming

This paper describes a protocol along with a comparative study of two microfluidic fabrication techniques, namely photolithography/wet-etching/thermal-bonding and Selective Laser-induced Etching (SLE), that are suitable for high-pressure conditions. These techniques constitute enabling platforms for direct observation of fluid flow in surrogate permeable media and fractured systems under reservoir conditions.

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Immunology and Infection

A Mouse Model for the Transition of Streptococcus pneumoniae from Colonizer to Pathogen upon Viral Co-Infection Recapitulates Age-Exacerbated Illness
Alexsandra Lenhard *1, Basma H. Joma *2,3, Nalat Siwapornchai 2, Anders P. Hakansson 4, John M. Leong 2,5, Elsa N. Bou Ghanem 1
1Department of Microbiology and Immunology, University at Buffalo School of Medicine, 2Department of Molecular Biology and Microbiology, Tufts University School of Medicine, 3Graduate Program in Immunology, Tufts Graduate School of Biomedical Sciences, 4Department of Translational Medicine, Lund University, 5Stuart B. Levy Center for the Integrated Management of Antimicrobial Resistance, Tufts University

This paper describes a novel mouse model for the transition of pneumococcus from an asymptomatic colonizer to a disease-causing pathogen during viral infection. This model can be readily adapted to study polymicrobial and host-pathogen interactions during the different phases of disease progression and across various hosts.

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