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Eric Erbe, Christopher Pooley
Staphylococcus aureus, 50,000x, USDA, ARS, EMU
UDA - United States Department of Agriculture
Bacterial cells of Staphylococcus aureus, which is one of the causal agents of mastitis in dairy cows. Its large capsule protects the organism from attack by the cow's immunological defenses.
This image was taken at 50,000X magnification on a Transmission Electron Microscope of a heavy-metal coated replica of a freeze dried sample,