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. 1982 Dec;16(6):1123-6.
doi: 10.1128/jcm.16.6.1123-1126.1982.

Demonstration of age-dependent capsular material on Pasteurella haemolytica serotype 1

R E Corstvet, M J Gentry, P R Newman, J A Rummage, A W Confer

Demonstration of age-dependent capsular material on Pasteurella haemolytica serotype 1

R E Corstvet et al. J Clin Microbiol. 1982 Dec.

Abstract

Extracellular capsular material was demonstrated on early log-phase cells of Pasteurella haemolytica serotype 1 by the fluorescent-antibody and several capsular staining techniques. The presence of this material was shown to be age dependent. Wide capsules were demonstrable on cells from 2- to 12-h cultures, whereas cells from 16- to 22-h cultures had very little cell-associated capsular material. The Maneval technique most clearly demonstrated the presence of capsules on cells from young (6-h) cultures when compared with other capsule staining techniques.

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