title: The age related loss of activity of four enzymes in the human erythrocyte.
mesh_terms: D002499:Centrifugation, Density Gradient; D004905:Erythrocyte Aging; D004912:Erythrocytes / Q000032:analysis / Q000201:enzymology*; D005954:Glucosephosphate Dehydrogenase / Q000097:blood*; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D007521:Isocitrate Dehydrogenase / Q000097:blood*; D007962:Leukocytes; D008433:Mathematics; D010430:Pentosyltransferases / Q000097:blood*; D010641:Phenotype; D010734:Phosphogluconate Dehydrogenase / Q000097:blood*; D011684:Purine Nucleosides; D012156:Reticulocytes / Q000201:enzymology; D013056:Spectrophotometry, Ultraviolet
chemical_list: D006454:Hemoglobins; D011684:Purine Nucleosides; D007521:Isocitrate Dehydrogenase; D010734:Phosphogluconate Dehydrogenase; D005954:Glucosephosphate Dehydrogenase; D010430:Pentosyltransferases