“…Initially, two aliquots of 3 ml Opti-MEM medium was added into two 5 ml Eppendorf micro test tubes, Lipofectamine ® 2000 and HSP27 plasmid were added individually into the two tubes and mixed with OPTI-MEM medium. A series of Lipofectamine ® 2000 volumes (20,25,30,20, and 20 µl) and HSP27 plasmid (8, 8, 8, 9 and 10 µg) were correspondingly tested. The reagents were individually incubated at 37˚C for 10 min prior being mixed and incubated at 37˚C for an additional 20 min.…”