CD79A and pemphigus: The most accepted definition of IgG/IgA pemphigus is that it shows the presence of cell surface IgG and IgA on direct immunofluorescence (DIF) and/or evidence of circulating cell surface IgG and IgA on indirect immunofluorescence (IIF) or enzyme-linked immunosorbent assay (ELISA) [5,6,7].