title: Human complement subcomponent C2: purification and proteolytic cleavage in fluid phase by C1s, C1r2-C1s2 and C1.
mesh_terms: D002499:Centrifugation, Density Gradient; D002845:Chromatography; D003166:Complement Activating Enzymes / Q000378:metabolism*; D003172:Complement C1 / Q000378:metabolism*; D015923:Complement C1r; D003173:Complement C1s; D003175:Complement C2 / Q000302:isolation & purification / Q000378:metabolism*; D005590:Fractional Precipitation; D006801:Humans; D046911:Macromolecular Substances
chemical_list: D003172:Complement C1; D003175:Complement C2; D046911:Macromolecular Substances; D003166:Complement Activating Enzymes; D015923:Complement C1r; D003173:Complement C1s