. "114171369"@en-us . "a substance produced by the mucosa of the stomach and intestines that is essential for the absorption of vitamin B12; \"lack of intrinsic factor can result in pernicious anemia\""@en-us . . "intrinsic factor"^^ . . "15023720-n"^^ . . "0"^^ . . . "0"^^ . . . . "intrinsic factor"@en-us . "115023720"^^ . . .