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Mastitis is first described and an experiment is recorded in which a herd of dairy cattle was formed of 26 " ceased reactor " cows and 14 unbred negative reacting heifers. During two years no case of Brucella abortus infection occurred, indicating that the " ceased reactor " cows were not a danger. ...

Bull. Univ. Wis. Sci. Ser., 1934, 428, pp 1-8 pp.