The economy of the columnar epithelial cell.
D000596:Amino Acids / Q000378:metabolism; D001639:Bicarbonates / Q000378:metabolism; D001693:Biological Transport, Active; D002712:Chlorides / Q000378:metabolism; D004848:Epithelium / Q000378:metabolism; D006601:Hexoses / Q000378:metabolism; D006801:Humans; D007408:Intestinal Absorption; D007422:Intestines / Q000166:cytology*; D012964:Sodium / Q000378:metabolism
D000596:Amino Acids; D001639:Bicarbonates; D002712:Chlorides; D006601:Hexoses; D012964:Sodium