title: Ultracentrifugation of the first component of complement: effects of ionic strength.
mesh_terms: D000818:Animals; D002118:Calcium / Q000494:pharmacology; D002499:Centrifugation, Density Gradient; D003165:Complement System Proteins / Q000032:analysis*; D004492:Edetic Acid / Q000494:pharmacology; D006168:Guinea Pigs; D006801:Humans; D007477:Ions / Q000494:pharmacology; D008274:Magnesium / Q000494:pharmacology
chemical_list: D007477:Ions; D003165:Complement System Proteins; D004492:Edetic Acid; D008274:Magnesium; D002118:Calcium