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For vitamin B12 to be absorbed from the gut, it must bind to a protein called intrinsic factor, which limits how much B12 the gut can take in at one time
Metabolites produced by the gut microbiome can significantly affect various liver diseases, such as non-alcoholic fatty liver disease, cirrhosis, and chronic liver disease
Cells synthesize it from three amino acids: glutamate, cysteine, and glycine
The parents of an individual with an autosomal recessive disorder each carry one copy of the defective gene, but usually are not affected by the disorder
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