title: Erythropoietin titers in normal human serum: an appraisal of assay techniques.
mesh_terms: D000818:Animals; D003115:Colony-Stimulating Factors; D004921:Erythropoietin / Q000096:biosynthesis* / Q000097:blood; D005260:Female; D005333:Fetus; D006385:Hemagglutination Inhibition Tests; D006403:Hematologic Tests / Q000379:methods*; D006801:Humans; D007501:Iron / Q000378:metabolism; D008099:Liver / Q000166:cytology; D051379:Mice; D011247:Pregnancy
chemical_list: D003115:Colony-Stimulating Factors; D004921:Erythropoietin; D007501:Iron