title: A comparison of four preparations of erythropoiesis regulatory factors.
mesh_terms: D000740:Anemia / Q000097:blood; D000818:Animals; D001681:Biological Assay; D004920:Erythropoiesis; D004921:Erythropoietin / Q000302:isolation & purification*; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007501:Iron / Q000378:metabolism; D008297:Male; D008722:Methods; D051379:Mice; D008806:Mice, Inbred AKR; D009101:Multiple Myeloma / Q000097:blood; D011817:Rabbits / Q000276:immunology
chemical_list: D004921:Erythropoietin; D007501:Iron