US Environmental Protection Agency
2 ARTICLES PUBLISHED IN JoVE
Immunology and Infection
Obtaining Highly Purified Toxoplasma gondii Oocysts by a Discontinuous Cesium Chloride Gradient
Sarah E. Staggs 1, Mary Jean See 2, J P. Dubey 3, Eric N. Villegas 2,4
1Dynamac, Inc., 2Department of Biological Sciences, University of Cincinnati, McMicken College of Arts and Science, 3Animal Parasitic Disease Laboratory, Agricultural Research Service, U.S. Department of Agriculture, 4National Exposure Research Laboratory, US Environmental Protection Agency
This study describes the development of a modified CsCl method that easily purifies T. gondii oocysts from feces of infected cats that are suitable for molecular biological and tissue culture manipulation
Immunology and Infection
A Modified EPA Method 1623 that Uses Tangential Flow Hollow-fiber Ultrafiltration and Heat Dissociation Steps to Detect Waterborne Cryptosporidium and Giardia spp.
Eric R. Rhodes 1, Leah Fohl Villegas 2, Nancy J. Shaw 2, Carrie Miller 3, Eric N. Villegas 1
1National Exposure Research Laboratory, Office of Research and Development, US Environmental Protection Agency, 2Shaw Environmental & Infrastructure, 3Office of Ground Water and Drinking Water, US Environmental Protection Agency
This protocol describes the use of a tangential flow hollow-fiber ultrafiltration sample concentration system and a heat dissociation as alternative steps for the detection of waterborne Cryptosporidium and Giardia species using EPA Method 1623.
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