Western blot analysis of mAbs against An. gambiae midgut
lysates. Seventeen mAbs were analyzed. Shown are representative mAbs of
the four different patterns observed: MG4B (IgG2a), MG24C (IgG1), MG25E
(IgG2a), and MG27A (IgG3). Lanes a, midgut antigens were treated under
standard SDS/PAGE reducing conditions. Lanes b, in addition to
standard SDS/PAGE reducing conditions midgut antigens were treated
with 20 mM periodate, which cleaves carbohydrate groups from
polypeptide chains.