United States Biological's Pab Rb x human IgA1 (Immunoglobulin A1, IGHA1, Immunoglobulin heavy constant alpha 1, Ig alpha-1 chain C region) antibody is a Rabbit Polyclonal antibody. This antibody has been shown to work in applications such as: EIA, Immunoassay, ELISA, Immunocytochemistry, Immunohistochemistry, and Western Blot.