酸奶，像其它的“益生菌”食品一样，有助于促进有利细菌在我们的消化道生长。
Yogurt, like other "probiotic" foods, helps to promotes the growth of favorable bacteria in our digestive tracts.
这种细菌也能够分泌抑制真菌生长的化学物质，同时，它还能产生促进宿主植物生长的激素。
The bacterium can also secrete chemicals that inhibit fungal growth, as well as hormones that stimulate the growth of its host plants.
发生这一现象的原因可能在于肠道的细菌会影响一种蛋白的积累，这一蛋白的功能正好是促进神经生长。
The normally timid critters became less cautious and less anxious, perhaps because the gut bacteria influenced a boost in a protein that promotes neural growth.
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