Innovative Research's Sheep Anti Rabbit tPA Polyclonal Antiserum is a frozen liquid polyclonal antibody. It's whole serum, rich in IgG & IgM antibodies, targeting the specified antigen, and includes host antibodies, various immunoglobulins, and other serum proteins. Suitable for analytic tools like ELISA kits and Western blots, this product ensures reliable, consistent results from Innovative Research.