[Evaluation of the specificity and results of an immunofluorescent study of infection among wild rodents and Ixodes ticks by the agent of North Asian tick-borne rickettsiosis].
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The effects of different temperatures on the expression of autogenic development in unfed/mated Ornithodoros parkeri Cooley females were examined. High temperature (29 C) induced autogeny in lower, middle and higher weight classes (11-20, 21-30, 31-40 mg, respectively) with all females in the highest weight class and most in the middle weight class ovipositing within 51 days post-mate. At a lower temperature (21 C) autogenic development was not expressed by higher and middle weight females, whereas lower weight females exhibited similar degrees of autogeny at both temperatures. Results are discussed in relation to presumptive factors involved in the control and mediation of autogeny.
An effective method for isolation of the membrane structural E protein, the so-called V3 glycoprotein, is described. Preliminary data of its amino acid composition have been obtained.
V3 glycoprotein isolated from virions of two antigenic types of TBE virus was found to be a valuable immunogen in experimental immunizations of rabbits and mice. The immune sera contained high titres of antibodies to TBE virus and other viruses of the TBE antigenic complex detectable in three serological tests. Species-, type-, and group-specific antibodies to TBE viruses were demonstrated. Mice vaccinated with TBE V3 glycoprotein developed immunity to TBE virus challenge. The isolated V3 glycoprotein of TBE virus, like whole TBE virus virions, carries several antigenic determinants.
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