@article {2,
	title = {The micro-organisms of tsetse flies.},
	journal = {Acta Trop},
	volume = {32},
	year = {1975},
	month = {1975},
	pages = {259-66},
	abstract = {<p>Micro-organisms from tsetse fly mycetomes were maintained in culture, where they were more pleomorphic than in the mycetomes, but were in some cases very similar to those observed in ovaries by other authors. Agglutination tests on the cultured forms indicated in affinity to Rickettsia. They were sensitive to antibiotics introduced by feeding flies on hosts treated with Ampicillin; this reduced the longevity and fecundity of the tsetse flies and appeared to disturb normal digestion of bloodmeals.</p>
},
	keywords = {Agglutination Tests, Ampicillin, Animals, Epithelium, Feeding Behavior, Rabbits, Tsetse Flies},
	issn = {0001-706X},
	author = {Southwood, T R and Khalaf, S and Sinden, R E}
}
@article {1,
	title = {Enhancement of the antigenic activity and virulence of the vaccine strain E of Rickettsia prow azeki by passages in cell culture.},
	journal = {Acta Virol},
	volume = {19},
	year = {1975},
	month = {1975 Nov},
	pages = {481-5},
	abstract = {<p>Changes in the biological properties of the vaccine strain E of Rickettsia prowazeki occurred upon cultivation of A1 (human amnion) cells infected with this strain. In the course of passages of these cells the antigenic activity and virulence of the rickettsia increased. The changes were observed in 10 out of 22 cell cultures examined: in 6 cultures there was an increase in the antigenic activity and in 4 both in the antigenic activity and in virulence. The time of the occurrence of these changes in the rickettsial populations varied from 12-18 to 53-102 days of passage of the infected cells.</p>
},
	keywords = {Amnion, Animals, Antibodies, Bacterial, Antibody Formation, Cell Line, Chick Embryo, Guinea Pigs, Humans, Rickettsia prowazekii, Rickettsial Vaccines, Vaccines, Virulence, Virus Replication},
	issn = {0001-723X},
	author = {Ignatovich, V F}
}
