Buxtonella species are large cyst-forming ciliates that infect ruminants and monkeys, and are morphologically similar to Balantidium coli ciliates that infect pigs, humans, monkeys, and other animals. In this study, we isolated spherical cysts of ciliates that were similar to those of Balantidium and Buxtonella species within collared mangabeys (Cercocebus torquatus) from the Wangcheng Zoo of Luoyang in the Henan Province of central China. The cysts were further identified and designated as belonging to the Buxtonella monkey genotype based on molecular analyses of 18S rRNA, 5.
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