United States Biological's Pab Rb x SPACA4 (Sperm Acrosome Membrane-Associated Protein 4, Sperm Acrosome Associated 4) antibody is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: Western Blot. The Pab Rb x SPACA4 (Sperm Acrosome Membrane-Associated Protein 4, Sperm Acrosome Associated 4) antibody was generated using SPACA4 as the antigen and it reacts with Homo Sapiens, and Human.