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R J Callow

Publications and source records attributed to R J Callow.

6 recordsLinked to original sources
PubMed1989

The detection of Salmonella infection in calves by the fluorescent antibody test.

The fluorescent antibody test (FAT) was used for the direct detection of salmonellas in 182 lymph nodes from adult cattle and from calves submitted for autopsy or used for experimental purposes. Salmonellas were detected in 22 samples by the FAT and in 18 by culture examination. The predictive value of the FAT was 68% and it was concluded that the test could be used for the rapid presumptive diagnosis of bovine salmonellosis.

Animals↗
PubMed1983

An examination of Escherichia coli strains isolated from cases of bovine mastitis for possible virulence determinants.

Ninety-five strains of Escherichia coli isolated from cases of bovine mastitis were examined for the possession of some of the possible virulence determinants. Ten strains which caused haemagglutination of bovine and ovine erythrocytes were considered to be fimbriated and an additional strain caused agglutination of chicken erythrocytes. Colicines were produced by fifteen strains and in three strains the colicine was identified as Col V. Forty-one of 71 strains that were examined serologically possessed capsular or envelope K antigens.

Animals↗