Each donation also undergoes {careful|picky|meticulous} {selection|selection} and sterilization in order to {obtain|secure|condition|guarantee} the use of only high-quality stem cells for the treatment of multiple sclerosis ({computers|pc|pcs} and {other|other} {disorders|problems}, {related to|caused by|provoked by the #file_links["C:\Users\Admin\Desktop\file\gsa+en+Georgiy20k60k2805253P2URLBB.txt",1,N].