Abstract
Two cases of Framboesia observed in São Paulo furnished material for this research.
The author says that he has carried on thousands of dark field examinations for Treponema pallidum and never saw circular forms of the germ as he did in the two cases of Framboesia. He recalls that Prowazek, in 1907, called attention to these forms of Treponema pertenue which he named resting, oval or rounded. It is possible that the number and position of the flagella, which is different in these species, may contribute to make easier the formation of the circular forms in the case of Treponema pertenue. The cultures carried on by the author on several media showed no growth. Inoculations of the material in two M. rhesus, one adult and the other young (6 months) were also negative.References
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