Fig. 3
From: Liposomal delivery of gene therapy for ovarian cancer: a systematic review
Distribution of studies that examined different liposomes: Distribution of included studies that examined the different types of liposomes used for gene therapy. The most extensively studied liposomes were the cationic liposomes (n = 37) and neutral liposomes (n = 25). DOPC, 1,2-dioleoyl-sn-glycero-3-phosphocholine; PEG, polyethylene glycol; bPEI, branched polyethyleneimine; siRNA, small interfering ribonucleic acid; micro-ribonucleic acid; DNA, deoxyribonucleic acid