Observations on the histomorphology of sarcosporidian cysts of some East African game animals (Artiodactyla).

The histomorphology of formalin-fixed micro and macrosarcosporidian cysts of Grant's, Thomson's gazelle, impala, wildebeest, Bubal hartebeest, Cape eland, red duiker, Kirk's dik-dik, defassa waterbuck, Bohor reedbuck, African buffalo, giraffe, warthog, and giant forest hog is described. The wall of microsarcosporidian cysts is smooth and without villi or with villi. The villi are solid or of honeycomb-like structure on tangential sections. In some animals, microsarcosporidian cysts of almost the same diameter with different wall structure were found in the same muscle of the same animal. Some muscle cells contained two or three microsarcosporidian cysts. The wall of macrosarcosporidian cysts of different game species showed also different structure.