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2. Agar diffusion studies on the species specificity of Balantidium coli, B. caviae and B. wenrichi;Krascheninnikow S;Immunology,1961
3. Observations and experiments on conjugation of Balantidium from chimpanzee;Nelson EC;American Journal of Hygiene,1934
4. An Intestinal Content Cultivation Medium
5. The production of hyaluronidase by Balantidium coli