Question

Recent research regarding gut bacteria indicates that ______.a. it’s better to be exposed to bacteria than

live a germ-free life; mice that were raised germ-free had a more robust stress response when compared with mice that were not raised this way

b. genetics play a profound role in how gut bacteria affects stress-related behavior, as studies of several different strains of mice resulted in only a few strains that showed an effect on behavior

c. the type of bacteria is irrelevant; exposure to both probiotics and pathogenic bacteria has been shown to decrease anxiety-like behavior in mice

d. not all animals have gut bacteria; mice siblings raised together differ in the amount and type of gut bacteria they have, with some having no gut bacteria at all

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