Inoculation of BALB/c mice against Leishmania major infection with Leishmania-derived antigens isolated by gel filtration.

Gel filtration can be used as a substitute for preparative polyacrylamide gel electrophoresis in the preparation of an immunogenic, partly purified, fraction isolated from lysates of Leishmania promastigotes. This fraction, the molecular weight of which ranged from 70,000 to 53,000, when administered to BALB/c mice in associated with muramyl dipeptide induced resistance against cutaneous leishmaniasis.