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IgG subclasses and IgE immunoblots against salivary proteins of Phlebotomus papatasi. Salivary gland proteins of P. papatasi were fractioned with a 15% sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). IgG subclasses and IgE antibodies react against salivary antigens from P. papatasi in three positive participants (1–3). Immunoblots of one negative human serum is also shown. The results were representative of 6 positive sera for IgG subclasses.
