Efficacy of adenoviral vectors (AdV) was checked by transduction of six different cell lines (COS-7, HUVEC, HMEC-1, NIH 3T3, HaCaT, and B16(F10)) with the vectors containing reporter gene beta-galactosidase (Adbeta-gal). We optimised the adsorption time and dose of Ad beta-gal. The transduction with efficacy of up to 100% was obtained for the doses 10-100 IU/cell. In order to examine the effect of transduction procedure on biology of the cells, we measured the production of major proinflammatory cytokines. In several cell lines (HMEC-1, HUVEC, HaCaT), we found the induction of IL-6 synthesis and decrease in the cell viability, particularly in the case of the highest Adbeta-gal dose. However, the treatment with adenoviral vectors did not induce TNF generation and did not modify proliferation of cells.