Fig. 3.
Percentage of polymeric immunoglobulin A (pIgA) and monomeric immunoglobulin A (mIgA) total IgA and cholera toxin subunit B (CTB)-specific IgA. IgA of serum was size-fractionated with a HiLoadTM 16/60 HR200 Superdex prep grade gelfiltration column. Total IgA and CTB-specific IgA were determined by enzyme-linked immunosorbent assay (ELISA). (a) Serum profile of total IgA and CTB-specific IgA of a representative nephropathy (IgAN) patient. Concentrations of high molecular weight IgA (pIgA) and of low molecular weight IgA (mIgA) in serum were determined by ELISA for total and CTB-specific IgA. (b) Percentages of CTB-specific mIgA and pIgA of six controls and six IgAN patients. In (c) percentages total mIgA and pIgA are depicted of six controls and six IgAN patients.