Estimation of serum pepsinogen.
D000752:Anemia, Pernicious / Q000097:blood; D004792:Enzyme Precursors / Q000097:blood*; D006454:Hemoglobins; D006801:Humans; D010447:Peptide Hydrolases / Q000097:blood*; D014443:Tyrosine / Q000097:blood
D004792:Enzyme Precursors; D006454:Hemoglobins; D014443:Tyrosine; D010447:Peptide Hydrolases