Legrand, Dominique2026-03-222026-03-221987https://andeanlibrary.org/handle/123456789/9395The study of the surface antigens of Leishmania braziliensis braziliensis revealed a great homogeneity among ten strains isolated from Bolivia and two reference strains from Brazil and Belize. A 72 kDa major protein, present in all L. b. braziliensis strains, was recognized by both cutaneous and mucocutaneous human sera, but was not recognized by Kala-azar and chagasic sera. No cross-reactive antigens were found among strains of Leishmania braziliensis guyanensis, Leishmania braziliensis panamensis, Leishmania mexicana amazonensis and Leishmania donovani chagasi testing these strains with hamster and human anti-L. b. bra ziliensis sera. Moreover, these strains possessed major antigens with molecular weights different from those of L. b. braziliensis strains. A microheterogeneity of L. b. braziliercis surface antigens was detected for the high molecular weight antigens and seemed to be related to the isoenzymic microheterogeneity.enLEISHMANIA BRAZILIENSIS BRAZILIENSISYODACIÓN DE LA SUPERFICIE CELULARINMUNOPRECIPITACIÓNANTÍGENO DE SUPERFICIEArticle