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Aim. Description of the results of molecular genetic research of insects-representatives of the subfamily Cetoniinae (flower chafer). Methods. For the analysis, methods of low-traumatic sampling of material for DNA isolation, polymerase chain reaction method, sequencing of the region of mtDNA COI gene were used. Results. A technique for sampling biological material for isolating DNA from the hind legs of individuals was proposed, which allowed not to remove from the habitat the individuals of the most valuable species, collected on the territory of the Republic of Belarus. A collection of DNA samples of representatives of the subfamily Cetoniinae was prepared. The haplotypes Oxythyrea funesta (Poda, 1761) and Protaetia aeruginosa (Linnaeus, 1767) of representatives of the populations inhabiting the territory of Belarus have been identified. Conclusions. There were significant differences in haplotypes among representatives of the Belarusian and European parts of their areal. Keywords: molecular markers, mtDNA, DNA-barcoding, insects, subfamily Cetoniinae.

Aim. Intravital video microscopy of cells is a highly informative approach to the study of cell cultures. Often, this method allows refining and complementing the data obtained by researchers at the visual study of living cultures or fixed preparations. The main problem of the long intravital video microscopy is the maintenance of cell activity. To solve this problem, video-computer "Tsitomir" has been developed. Methods. During cultivation the images of the cell culture areas (from one to several hundred) specified by researcher are captured at regular intervals (time-lapse method of photography). A motorized sample stage allows moving the culture vessel with the joystick, as well as to scan the specified cell culture sites automatically. Results. In our investigations, we studied such processes as cell division, death, differentiation, motility and massive changes of cell cultures associated with cancerous transformation, including abnormal morphological changes and cell aggregation. The effectiveness of the intravital cell microscopy use to test the anti-cancer drugs is shown as well. Conclusions. Opportunities of video-complex enable its use in biomedical research, in the development of cell technologies, the study of the action of pharmacological agents and sanitary-hygienic regulation of chemicals in the cell assay systems. Obtained through "Tsitomir" photos and videos can also be used as educational material for students of biological, medical and agricultural universities.Keywords: cell culture, intravital videomicroscopy, differentiation, proliferation, anti-cancer protection.