title: Letter: Thymidylate synthetase in pernicious anemia.
mesh_terms: D000752:Anemia, Pernicious / Q000097:blood*; D001853:Bone Marrow / Q000201:enzymology*; D001854:Bone Marrow Cells; D006801:Humans; D008780:Methyltransferases / Q000032:analysis*; D013940:Thymidylate Synthase / Q000032:analysis*
chemical_list: D008780:Methyltransferases; D013940:Thymidylate Synthase