Translations:Vitamin B12/37/en: Difference between revisions

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Message definition (Vitamin B12)
==Sources==
===Bacteria and archaea===
Vitamin B<sub>12</sub> is produced in nature by certain [[bacteria]], and [[archaea]]. It is synthesized by some bacteria in the [[gut microbiota]] in humans and other animals, but it has long been thought that humans cannot absorb this as it is made in the [[Large intestine|colon]], downstream from the [[small intestine]], where the absorption of most nutrients occurs. [[Ruminant]]s, such as cows and sheep, are foregut fermenters, meaning that plant food undergoes microbial fermentation in the [[rumen]] before entering the true stomach ([[abomasum]]), and thus they are absorbing vitamin B<sub>12</sub> produced by bacteria.

Sources

Bacteria and archaea

Vitamin B12 is produced in nature by certain bacteria, and archaea. It is synthesized by some bacteria in the gut microbiota in humans and other animals, but it has long been thought that humans cannot absorb this as it is made in the colon, downstream from the small intestine, where the absorption of most nutrients occurs. Ruminants, such as cows and sheep, are foregut fermenters, meaning that plant food undergoes microbial fermentation in the rumen before entering the true stomach (abomasum), and thus they are absorbing vitamin B12 produced by bacteria.