R&D Systems, a Bio-Techne Brand's Phospho-Chk1 (S345) Antibody is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: Western Blot. The Phospho-Chk1 (S345) Antibody was generated using CHEK1 as the antigen and it reacts with Homo Sapiens, and Human.