[Ultrastructural organization of carcinoma Lewis (3LL) cells during cisplatin resistance formation].

The electron-microscopic analysis of the morphological status of 3LL (Lewis) carcinoma tumour cells in the process of cisplatin resistant phenotype formation has been performed. It was shown that selection of tumour cells forming cell clones characterized by more complicated nuclear and cytoplasm organization took place. The tumour cells had the diffused nuclear chromatin; nuclear envelope had the numerous pores with expanded diaphragms.

[The blood microcirculatory bed in the prenatal period of human morphogenesis].

It was found by means of light and transmission electron microscopy that the arteriolar portion of the blood circulatory bed of functionally different organs is formed during intrauterine development as a result of structural transformations of cellular and noncellular components of the wall of afferent microvessels of the protocapillary bed.