United States Biological's Pab Rb x human CD19 (B-lymphocyte Antigen CD19, B-lymphocyte Surface Antigen B4, Differentiation Antigen CD19, T-cell Surface Antigen Leu-12) (Biotin) 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, B-lymphocyte Surface Antigen B4, Differentiation Antigen CD19, T-cell Surface Antigen Leu-12) (Biotin) antibody was generated using CD19 as the antigen and it reacts with Homo Sapiens, Human, and Mouse.