trypanosomes in cattle in southern ontario.trypanosomes were found in the blood of 155 out of 274 holstein cows of various ages from southern ontario. the incidence varied from about 8% in one herd to about 85% in another herd. two species of trypanosomes were found in cattle in the guelph area. one was trypanosoma theileri. the other was a much smaller trypanosome which morphologically resembles t. uniforme of the salivaria. this is the first report of such a trypanosome in cattle in north america. epimastigotes from blood agar slants o ...19704246837
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