United States Biological's Pab Rb x human C1S (Complement C1s Subcomponent, C1 Esterase, Complement Component 1 Subcomponent S) (APC) antibody is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: Western Blot. The Pab Rb x human C1S (Complement C1s Subcomponent, C1 Esterase, Complement Component 1 Subcomponent S) (APC) antibody was generated using C1S as the antigen and it reacts with Homo Sapiens, and Human.