United States Biological's Pab Rb x human PRSS21 (ESP1, TEST1, Testisin, Eosinophil Serine Protease 1, Serine Protease 21) (PE) antibody is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: Western Blot. The Pab Rb x human PRSS21 (ESP1, TEST1, Testisin, Eosinophil Serine Protease 1, Serine Protease 21) (PE) antibody was generated using PRSS21 as the antigen and it reacts with Homo Sapiens, Human, and Mouse.