Thermo Fisher Scientific's CD274 (PD-L1, B7-H1) Antibody Biotin is a Mouse monoclonal antibody. The CD274 (PD-L1, B7-H1) Antibody Biotin was generated using CD274 as the antigen. It reacts with Homo Sapiens, and Human. This antibody has been shown to work in applications such as: Flow Cytometry.