| [immunobiological and antigenic studies of babesia ovis strains in bulgaria]. | a comparative study was carried out on the immunologic and antigenic properties of 8 strains of babesia ovis isolated in 5 districts of the country. the immunologic capacity was tested through challenging with each of the strains in group of 4 weaned lambs that were preliminary vaccinated with one of the strains - veliko turnovo. two nonvaccinated animals were included in each group, serving as controls. the strength of immunity was checked by both the temperature and the parasitic reaction as w ... | 1981 | 7303478 |