Salmon protamine chloride, calf thymus DNA, 2,2'-Azobis(2-amidinopropane) dihydrochloride (AAPH), poly-L-arginine hydrochloride (MW 5-15 kDa), poly-L-lysine hydrochloride (MW 15-30 kDa), ethidium bromide and dextran sulfate sodium salt from Leuconostoc spp. (MW 9-20 kDa) were purchased from Sigma Aldrich. Agarose was purchased from VWR while pBR322 plasmid DNA was purchased from New England Biolabs. Both CT-DNA and plasmid DNA purity was verified by measuring the ratio of absorbance at 260 and 280 nm of DNA solutions and found to be satisfactory with values exceeding 1.8. All chemicals were used without further purification.