[Intravital diagnosis of intestinal echinococcosis in dogs under field conditions].

Studies were carried out with regard to the diagnosis of intestinal echinococcosis in dogs as the definitive host when still alive, under field conditions. Effective worming and macrohelminthoscopy in such conditions resulted in 52.36 per cent effect.

[Dynamics of the histological changes in the liver of lambs during experimental and spontaneous Cysticercus tenuicollis invasion].

A histologic investigation of the liver was carried out with lambs after experimental and spontaneous infection with Cysticercul tenuicolis. Varying in character was the response of the host to the parasite at the site of localization. In some cases the connective tissue component was prevailing, while in others there was predominantly a cell-inflammatory demarcation around the cysts.

[Comparative immunological studies and the determination of the epizootiological effectiveness of Soviet vaccine LTF-130 in trichophytosis].

The immunological response of calves vaccinated against herpes is explained and the epizootic effectiveness of the Soviet vaccine ltf 130 applied in Bulgaria is assessed. The antigenic relation of the vaccine's strain with the agent causing herpes in Bulgaria was revealed by parallel investigation on serum RCB of calves suffering from herpes and of calves vaccinated with ltf 130. The immunological response was assessed by proving the existence of complement binding antibodies.