Anti-IgA Antibody (7U718)polymeric immunoglobulin receptor Secretory component, polymeric immunoglobulin receptor, Poly-Ig receptor, PIgR, Immunoglobulin heavy constant alpha 2 A2m marker, Immunoglobulin heavy constant alpha 2, Immunoglobulin heavy constant alpha 1, IGHA2, IGHA1, IGHA, Ig alpha 2 chain C region, Ig alpha 1 chain C region, Hepatocellular carcinoma-associated protein TB6