MMP-3 Antibody Host:Rabbit Antibody Type:Polyclonal Species Reactivity:Human, mouse, rat, horse, rabbit Application:Western blot Western blotting (0.5-4 μg/ml). However, the optimal concentrations should be determined individually. The antibody recognizes the MMP-3 of human, mouse, rat, horse, and rabbit origins. Reactivity to other species has not been tested. The antibody detects the 55 kDa full length and the 21 kDa cleavage fragment of MMP-3.