[Population density and area-specific distribution of the imago form of Hyalomma marginatum ticks, the vector of Crimean haemorrhagic fever, in Dagestan]. / Chislennost' i statsial'noe raspredelenie imago iksodovogo kleshcha Hyalomma marginatum--perenoschika krymskoi gemorragicheskoi likhoradki v Dagestane.

The results of the determination of the amount and location of ticks Hyalomma marginatum in Daghestan at the period of the appearance of cases of Crimean haemorrhagic fever (CHF) are presented. The domination and abundance indices of these ticks in different landscape areas, on the territories of some plain and foothill regions of the Republic of Daghestan are given. The advantages of the effective method for the collection of ticks "on the observer" have been substantiated. The data thus obtained are of importance for the epidemiological surveillance and prophylaxis of CHF.

[Psychotropic properties of hormonally inactive derivatives of androstane]. / Nekotorye psikhotropnye svoistva gormonal'no neaktivnykh proizvodnykh androstana.

It has been shown in experiments on noninbred male rats that 17 beta-acetylamino-5-androstene-3 beta,16 beta-diol, 17 beta-amino-5-androstene-3 beta,16 beta-diol hydrochloride, and 17 beta-acetylamino-4-androstene-3,16-dione have an anxiolytic action. These compounds do not exhibit any myorelaxant, anticonvulsant or antineurotic activity common to benzodiazepine tranquilizers. The anxiolytic effect of the compounds under consideration is coupled with the ability to reduce the level of alcoholic motivation in rats.