Proteinaceous extract derived from eimeria maxima gametocytes and vaccines against eimeria maxima containing the same

摘要

Substantially purified Eimeria maxima gametocytes have been prepared and methods for their preparation are disclosed. A proteinaceous extract derived from the gametocytes comprises at least nine proteins of varying molecular weights. Vaccines for conferring upon a chicken active immunity against infection comprise an effective immunizing amount of Eimeria maxima gametocytes or gametocyte extract and a carrier. Also provided is a method if in vitro development of Eimeria spp. gametocytes or oocysts and a method of assaying drug or anti-gametocyte antibody effectivity on Eimeria spp. development in vitro.