title: A simple preparation method of monospecific antiserum to human C1r.
mesh_terms: D003172:Complement C1 / Q000276:immunology* / Q000302:isolation & purification; D006801:Humans; D007106:Immune Sera / Q000302:isolation & purification*; D008722:Methods
chemical_list: D003172:Complement C1; D007106:Immune Sera