Mwili wa mwanadamu una zaidi ya trilioni 100 za bakteria tofauti, ambazo nyingi ziko kwenye njia ya utumbo.
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10 Ukweli Wa Kuvutia About The role of bacteria in the human body and the importance of probiotics

10 Ukweli Wa Kuvutia About The role of bacteria in the human body and the importance of probiotics