[Reaction of melanocytes in vertebrate retina to the exposure to constant magnetic field].

The influence of a constant magnetic field (strain 40 kA/m) on retina pigmentary cells of grass frog (Rana temporaria) and grey pigeon (Columba livia) eyes was investigated. Changes in the number and length of melanocytes appendixes were noticed accompanied by formation of thickenings in which melanosomes sized from 0.1 to 0.

[The relief of the luminal surface of the sinuses in the mammalian cranial dura mater].

In Mammalia with different types in organization of blood outflow in the dura mater venous sinuses: vertebral (tiger), jugular (fur-seal, cat, rabbit) and mixed (rat, dog, man) the internal surface relief of these sinuses has been studied. The total plan of the relief in all the species studied is principally the same. It is characterized with presence of visually determined macro-relief structures: Pacchionian bodies, trabeculae, bars, eminences and excavations in places, where the sinuses fuse, initial folds (micro-relief) and, at last, formations composed by the nucleus and the external membrane of endotheliocytes (ultra-relief).

[Modeling of blood drainage from the longitudinal sinus depending on the vessel bifurcation level].

Simulation of hydrodynamic conditions in the brain showed the dependence of fluid drainage velocity on the bifurcation level of branching vessels. The conclusion was that acute angle of the longitudinal sinus bifurcation in different bio-morphological groups of animals represented special features of the brain drainage in the brain in connection with life conditions.

[Venous sinuses of the dura mater of the bird brain].

By means of corrosive, injection and tracheoscopy methods venous formations of the brain have been studied in 19 species of birds--endemical for Far East--from 12 orders. Four types of the venous sinuses structure have been distinguished in the dura mater: the first type of the structure is specific for birds that live an inactive and quiet life (blue rock pigeon, Ussuric pheasant, Tetrastes bonasia, domestic hen). The second type of the sinus structure occurs in birds, that sharply change the speed and height of their flight (Otus bakkamoena).