Browsing Drake Theses and Dissertations by Subject "Cattle--Health"
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A Physical, Cultural, and Nutritional Study of "Leptospira Interrogans" Serotype "Hardjo" with Emphasis on Antigenicity, Immunogenicity, and Viability (Drake University, 1983-08)The problem. "Leptospira interrogans" serotype "hardjo" has been indicated as the cause of abortion and clinical leptospirosis in cattle. It is a fastidious organism and has been difficult to reisolate from infected ...