Goats neonatal animals

Figure 1-2 Transmission electron micrograph of a dividing cell of Escherichia coli 0157 H7 attached to the intestinal epithelium of a neonatal calf. These bacteria, which are able to efface the intestinal microvilli, form characteristic attachments, and secrete shiga toxins, are responsible for -73,000 illnesses and 60 deaths per year in the U. S.10a After embedding, the glutaraldehyde-fixed tissue section was immuno-stained with goat anti-0157 IgG followed by protein A conjugated to 10-nm gold particles. These are seen around the periphery of the cell bound to the O-antigen (see Fig. 8-28). Notice the two microvilli of the epithelium. Courtesy of Evelyn A. Dean-Nystrom, National Animal Disease Center, USD A, Agricultural Research Service, Ames, IA.

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