HAT-2 Antibody Host:Rabbit Antibody Type:Polyclonal Species Reactivity:Human Application:Western blot Western blotting (0.5-4 μg/ml). However, the optimal concentrations should be determined individually. The antibody recognizes ~65 kDa HAT-2 from human samples, and in a lesser extent, from mouse and rat samples. Jurkat cell lysate (Cat.# 2401-100) can be used as a positive control.