{at that time|while} adult stem cells had been {important|used|used|in use} for decades for the treatment of a number of {malignant|cancerous} {tumors|neoplasms}, bone marrow transplantation, {in fact|actually}, {is|represents} {the only|the latest {method|method|variant} of #file_links[“C:\Users\Admin\Desktop\file\gsa+en+10k20k50kGeorgiy2504253URLBB.txt”,1,N], {which|which} is not {is|becoming} experimental.