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. 1968 Aug;16(8):1179–1190. doi: 10.1128/am.16.8.1179-1190.1968

Phage Typing Reactions on Brucella Species

Lois M Jones 1, G S Merz 1,1, J B Wilson 1
PMCID: PMC547616  PMID: 4970893

Abstract

The nature of the phage typing reactions on Brucella species was determined by rates of adsorption and infection, one-step growth experiments, and susceptibility to lysis from without. The highest rates of adsorption and infection were obtained on smooth B. abortus cultures, and large clear plaques were produced. One or a few phage particles per B. neotomae cell killed about one-half of the cells, but some went through an infective cycle and released mature phage that resulted in production of small clear plaques. With B. suis, more phage particles per cell were required to kill, replication did not occur, and plaques were not observed. Still greater numbers of phage particles were required to cause some inhibition of growth of B. melitensis lawns. Rough Brucella cultures and species, such as B. ovis and B. canis, were not affected by the highest concentrations of phage. B. abortus cultures of intermediate colonial morphology adsorbed phage, but only a few infected cells (after a delayed latent period) released mature phage. An infected culture or colony appeared normal until spontaneous phage mutants appeared which could penetrate the cell wall more effectively than the parent phage. The mutant phage multiplied more rapidly, and the colony changed to a sticky white form.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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