Tubulin 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. HeLa cell or Jurkat cell lysate can be used as a positive control. The antibody recognizes 55 kDa β-tubulin in samples of human, mouse, and rat origins. Reactivity to other species has not been determined.