The absence of gamma-glutamyltransferase in erythrocyte membranes.
D004910:Erythrocyte Membrane / Q000201:enzymology*; D006801:Humans; D007962:Leukocytes / Q000201:enzymology; D005723:gamma-Glutamyltransferase / Q000097:blood*
D005723:gamma-Glutamyltransferase