Relaxin-1 Antibody Host:Rabbit Antibody Type:Polyclonal Species Reactivity:Human, mouse, rat Application:Western blot Western blotting (0.5-4 μg/ml). However, the optimal concentrations should be determined individually. Other applications have not been tested. The antibody recognizes Relaxin-1 (~20 kDa) and its dimer form (~40 kDa) in samples from human, mouse and rat origins. Other species have not been tested.