The Mab Rb x human Chk1, phosphorylated (Ser296) (Cell Cycle Checkpoint Kinase 1) antibody from United States Biological is a Rabbit Monoclonal antibody to CHEK1. This antibody recognizes Homo Sapiens, Human, Mouse, and Rat antigen. The Mab Rb x human Chk1, phosphorylated (Ser296) (Cell Cycle Checkpoint Kinase 1) antibody has been shown to work in the following applications: Western Blot.