 Thus, after intratumoral injections of the virus, complete or partial remission of mast cell tumors (mastocytomas) was observed in dogs affected by this disease.Short-term remission after an intravenous injection of SeV was described in a patient with acute leukemia treated in the Clinical Research Center of University Hospitals of Cleveland (USA) by multiple viruses in 1964.It is also reported that the Moscow strain of SeV was tested by Dr. V. Senin and his team as an anticancer agent in a few dozen patients affected by various malignancies with metastatic growth in Russia in the 1990s.