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Biomedical subjects

S Petrow

Publications and source records attributed to S Petrow.

12 recordsLinked to original sources
PubMed1975

Immunofluorescent antibody test for diagnosis of gonorrhoea.

An indirect fluorescent antibody test was evaluated in 198 cases of a high-risk group with a culture prevalence of 37.3% and in 426 cases of a low-risk group with a culture prevalence of 1.16%. A sensitivity of 77.1% in the culture-positive patients with uncomplicated gonorrhoea, and a specificity of 88.7% in the culture- and history-negative cases, was obtained in the high-risk group. In this group, the sera from 88.8% of the patients with culture-proven gonorrhoea became positive in an indirect fluorescent antibody test within 3 weeks of last sexual contact. In the low-risk group, for which the sensitivity could not be determined due to various reasons, a specificity of 95.8% was obtained. Complement fixation test was positive in sera of only 17.6% of the culture-positive cases of the high-risk group.

Adolescent↗
PubMed1974

Unusual bacteriophages in Salmonella newport.

Six phages were isolated from sewage and from a lysogenic strain. Three of them, belonging to a new morphological group, had contractile tails and elongated heads with axial ratios of 2.4:1. Two phages, possessing short tails and very long heads with axial ratios of 3.5:1, were new isolates of an extremely rare group. Phages of both groups formed polyheads of various sizes and shapes. The last phage, 61 nm in diameter, seemed to have a tail-like appendage. All phages had double-stranded DNA, were active on enterobacteria only, and differed in their host range. The first five phages seemed to be Salmonella specific.

Acridines↗