title: C1. The first component of complement: the subcomponents of C1q, C1r, C1s, C1-inhibitor, C1q-receptors. Dedicated to Prof. Paul G. Klein.
mesh_terms: D003172:Complement C1; D005860:Germany, West; D049673:History, 20th Century; D006801:Humans
chemical_list: D003172:Complement C1