Rabbit Human J chain of dimeric IgA, conjugated with FITC Antibody

Fluorescein isothiocyanate-conjugated IgG fraction of polyclonal rabbit antiserum to human J chain of dimeric IgA. Human J chain is a polypeptide folded within the structure of the polymeric immunoglobulin, resulting in a very limited exposure of J chain antigenic determinants. The antiserum is raised against the isolated and purified J chain. J chains isolated from polymeric IgA and IgM are identical by criteria of composition, peptide maps and antigenicity; Human J chain is distinct from all other chain components of polymeric IgA and IgM. It has a unique primary structure as shown by sequence analyses. Freund's complete adjuvant is used in the first step of the immunization procedure.