The article relates to detailed observation of the effect of MRET activated water with the modified molecular structure on Staphylococcus aureus. MRET water is produced with the help of Molecular Resonance Effect Technology patented in the USA. The investigation described in this article was conducted in animal model and in vitro at the Division of Microbiology and Immunology, Biological Department of Kyiv National Shevchenko University, Ukraine. The research in animal model revealed the fact that the consumption of MRET water stimulated the phagocytic activity and the immune response. The phagocytic system is one of the main factors of natural non-specific cellular resistance to infections and inflammations. It is the first line of protection of an organism against the penetration and reproduction of pathogenic microorganisms. The protective role of phagocytes is based on their capacity to identify, engulf and neutralize the alien agents penetrating into internal environment of a macro-organism. Particularly, the consumption of MRET water reduced the death rate from 30% (control group of mice on non-activated water) to 0% (two groups of mice on MRET water) during the first 9 days of experiment after intra-peritoneal inoculation of Staphylococcusculture. The significant bacteriostatic effect of 70 - 100% (depending on initial concentrations of pathogens) was observed in vitro for MRET-activated nutrient medium in this investigation.

Key words: MRET water, Staphylococcus aureus, Phagocytes, Macrophages,Neutrophils, cytotoxic activity, bacteriostatic.