United States Biological's Pab Rb x human NAPSA (NAP1, NAPA, Napsin-A, Aspartyl Protease 4, ASP4, Asp 4, Napsin-1, TA01/TA02) (Biotin) antibody is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: Western Blot.