摘要：The use of gel diffusion precipitin plates in the study of brucella is described. Cultures of Brucella melitensis yielded a diffusible precipitin antigen which produced lines with sera of rabbits, goats, and cattle that had been infected with either Br. abortus or Br. melitensis . The precipitin lines varied in number from one to three. A diffusible precipitin antigen could not be prepared from Br. abortus and Br. suis cultures by the methods which were effective in producing such an antigen from Br. melitensis . No precipitin reactions occurred with sera from cattle in brucella-free herds which had been inoculated with Strain 19 vaccine, although some of these sera were positive to the agglutination test. Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (853K), or click on a page image below to browse page by page. Links to PubMed are also available for Selected References . 187 188 189 190 191 192 193 194 195 196
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