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BACTERIA BATTLEGROUND. In this animation, probiotic Lactobacillus fermentum bacteria (dark blue) face off against Escherichia coli (red) in the vagina. By secreting acids and other byproducts (below, top) that neutralize the infection-causing E. coli, the lactobacilli kill or displace the pathogens. Credit: M. Neysmith with Reid/UWO
Found in: Biomedicine

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