N B Vasil'ev

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The qualitative and quantitative ultrastructural examinations of nucleoli of follicular cells and oncocytes of human thyroid revealed no morphological differences between these two types of cells and confirmed the presence of all structures necessary for normal functioning. Oncocyte nuclei are not carriers of morphological alterations which could have(More)
A correlation was found between the initial relative thickness of vascular wall and the extent of vasoconstriction in response to standard stimulation of sympathetic strings. The distribution of vessels within the wall was comprised in mathematical model which estimated interrelationships among three variables: pressure perfusate expenditure and a(More)
A mathematical description of random orientation of centrioles with respect to the plane has been suggested for two modes of experimental procedure: a) all the centrioles in a given volume are taken into account; b) all the centrioles crossing an ultrathin section are accounted. In the former case the function of distribution does not depend on the length(More)
Methods for estimation of randomness of mutual overlaps of cells, their parts, and intracellular structures are developed. Two methods are proposed: a "method of areas" based on the estimation of the area of overlaps of randomly located figures, and a "method of contours" based on the evaluation of the number of intersections of linear structures located(More)
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