The Immunotag™ OPN Polyclonal Antibody from G Biosciences is a Rabbit Polyclonal antibody to Spp1. This antibody recognizes Human, Mouse, and Rat antigen. The Immunotag™ OPN Polyclonal Antibody has been validated for the following applications: ELISA, Immunohistochemistry, Immunohistochemistry - fixed, and Western Blot.