
Keywords: PEI, polyethylene imine; DOGS, dioctadecylamidoglycyl-spermine; DMAPAP, dimyristoylaminopropylaminopropyl; EtOH, ethanol; DMEM, dubelcco minimum essential medium; FBS, foetal bovine serum; NaCl, sodium chloride; PBS, phosphate buffer saline; PFA, paraform