[Residual chlorinated hydrocarbons and polychlorinated biphenyls in milk and milk products].

In the years 1987 to 1988 the residues of chlorinated hydrocarbons (HCB, alpha HCH, gamma HCH, DDE + DDT sum and PCB) were detected in more than 5000 thousand samples of milk and milk products (butter, cream, sheep milk cheese, cheeses). The recorded values of HCB ranged from 0 to 0.90 mg per kg fat, those of alpha HCH from 0 to 0.

[The effect of adjuvant substances on the antigenic activity of cellular antirabies vaccine in experiments on cattle].

Trials were conducted with young cattle to study the effect of adjuvants, applied subcutaneously and intramuscularly, upon the antigenic activity of live and inactivated cell rabies vaccine prepared from the Vnukovo -32 strain at the level of the 107th series cell passage. Cerebral vaccine of Fermi type was also used in the trials for comparison. The antibodies were parallelly titrated by four methods, three of which were conducted in vitro.

[Neuroallergic activity of anti-rabies vaccines].

The safety and neuroallergic activity of current commercial and experimental rabies vaccine were studied by detecting the patho-histological changes in the central nervous system of laboratory animals (guinea-pigs) according to the method recommended by the World Health Organization (Gispen, 1975). Six rabies vaccines were tested in the experiments. The vaccines are as follows: lyophilized rabies vaccine - human; lyophilized rabies vaccine - veterinary; rabies vaccine U.