According to the researchers, the ability to find extremely rare melanoma cells in the blood, which absorb light more strongly than other cells in the patient's blood, will become a key technique in the new Russian system for diagnosing tumors without drawing blood.According to statistics conducted by scientists, successful treatment of cancer in the first stage of development is possible in 92% of cases, in stage II 76% and in stage III 56%. of drugs, allowing individual selection of treatment, taking into account the characteristics of each patient. Currently, cancer is diagnosed and the effectiveness of drug therapy is monitored using blood tests, as the test materials require a sterile specialized laboratory, qualified specialists and a long diagnostic period.