title: Letters: Amino acid uptake.
mesh_terms: D000596:Amino Acids / Q000378:metabolism*; D000818:Animals; D001693:Biological Transport, Active; D007408:Intestinal Absorption; D007413:Intestinal Mucosa / Q000378:metabolism; D051381:Rats; D013237:Stereoisomerism
chemical_list: D000596:Amino Acids