人体肠内常见之阿米巴有痢疾阿米巴、结肠阿米巴、微小内蜒阿米巴及卜氏嗜碘阿米巴等。其中多数不具致病性,仅痢疾阿米巴常致患者发生痢疾。急性阿米巴痢疾患者之粪便呈黏液状,常有活体之滋养型存在,半成形之稀便中可能找出滋养型及包囊型,而成形之粪便中仅见包囊型。故临床上欲诊断阿米巴痢疾时,必先检验粪便中有无痢疾阿米巴之存在。 Amoeba, which is commonly found in the human intestine, has dysentery amoeba, amoeba of the colon, amoeba of the subtle intramellitus, and amoeba of bluish immaturity. Most of them are not pathogenic, and only dysentery amoeba often causes dysentery. The feces of patients with acute amoebic dysentery are mucinous and often present in the nourishment of living organisms. Nourishment and cysts may be found in semi-molten loose stools, and only cysts are found in the formed feces. Therefore, when clinically diagnosing amoebic dysentery, one must first test for the presence of dysentery amoeba in feces.