title: The cell growth-promoting factor, II.
abstract: The cell growth-promoting factor, found in human erythrocytes, is a protein fraction. Its activity lies in the range of 150 to 250 GU/mg of tested substance, while that of serum ranges only from 25 to 50 GU/mg of dry powdered serum.
mesh_terms: D004912:Erythrocytes / Q000032:analysis*; D006133:Growth Substances / Q000097:blood* / Q000302:isolation & purification; D006801:Humans; D008970:Molecular Weight
chemical_list: D006133:Growth Substances