United States Biological's Pab Rb x human CD19 (B-Lymphocyte Antigen CD19, CD19 Molecule) antibody is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: Western Blot. The Pab Rb x human CD19 (B-Lymphocyte Antigen CD19, CD19 Molecule) antibody was generated using CD19 as the antigen and it reacts with Homo Sapiens, and Human.