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EN
The classification of the bacteria of the family Chlamydiaceae has undergone significant changes over the last 30 years. Initially, from the 1950s onwards, the genus Chlamydia (C.) included only two species: C. trachomatis and C. psittaci. Later, in the late 1980s and early 1990s, another two species, C. pneumonia and C. pecorum, were isolated from the existing species C. psittaci. The year 1999 saw a revolution in the chlamydial taxonomy: since, on the basis of molecular research, two genera were distinguished: the genus Chlamydia with 3 species (C. trachomatis, C. suis, C. muridarum) and the genus Chlamydophila (Cp.) with 6 species (Cp. psittaci, Cp. pneumoniae, Cp. pecorum, Cp. abortus, Cp. felis, Cp. caviae). In the last 2-3 years, further molecular studies have shown that, in fact, the Chlamydiaceae family comprises a single genus Chlamydia with 9 species. In this paper we present the changes that have occurred in the Chlamydia genus according to Bergey’s bacterial taxonomy. The paper also presents the history of the nomenclature of those bacteria and short descriptions of the nine species of Chlamydia, including the most recent data.
EN
The aim of the study was to show the dynamics of lymphocytes T (receptor CD5+ ), Th (receptor CD4+), Tc/Ts (receptor CD8+), B (receptor IgM . mu chain), as well as lymphocytes with receptor CD25+ in rabbits immunised with Chlamydophila abortus and Chlamydophila psittaci. Moreover, a serological test was carried out. The analysis of the results indicated that the immunisation of rabbits with the studied antigens in case of lymphocytes T and their subpopulations caused a similar increase and decrease of their amount and in case of lymphocytes B only an increase. Those changes are noted in 7th . 14th day after the immunisation and they persist until 42nd . 56th day of the experiment. Moreover, the positive titre of antibodies was noticed on the 35th . 42nd day after the immunisation, i.e. 4-6 weeks after the changes in the amount of lymphocytes.
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