
Keywords: HEPES، 4- (2-hydroxyethyl) -1-piperazine ethanesulfonic acid; AMC, amylmetacresol; ASTM, American Society for Testing and Materials; ATCC, American Type Culture Collection; CMV, cytomegalovirus; DCBA, 2,4-dichlorobenzyl alcohol; EBV, Epstein–Barr virus; HEPES, 4-(2-hydroxyethyl)-1-piperazine ethanesulfonic acid; MEM