从吃生猪肉的人粪便分离收集孢子囊接种猪,56d后在猪的心肌和骨骼肌中发现肉孢子虫包囊。包囊呈梭状、椭圆或长椭圆形。包囊壁有密集绒毛状突起,并由壁向内形成隔膜将包囊分隔成许多隔室,室中充满香蕉形缓殖子,其大小为10.46×4.61μm。有些包囊中有圆形或近圆形母细胞。用含包囊的生猪肉感染猕猴5只,未成功;但感染前肌注氢化可的松的1只猴在感染后第11d开始排出孢子囊,孢子囊大小为12.72×10.24μm,持续9天。 Sporangium was inoculated from human excrement of raw pork and swine sow was inoculated 56 days later in swine myocardium and skeletal muscle. Cysts are fusiform, oval or oblong. Encapsulated walls have densely villous projections, and the membrane is formed inwardly from the wall to divide the capsule into compartments filled with banana-shaped brains with a size of 10.46 × 4.61 μm. Some cysts have round or nearly round blast cells. Five macaque monkeys infected with encapsulated raw pork were unsuccessful. However, one monkey intramuscularly injected with hydrocortisone began to expel sporangia from the 11th day after infection with a size of 12.72 × 10.24μm for 9 days .