To construct a soluble protein-DNA complex. Methods: A plasmid DNA was conjugated with asialoorosomucoid. Asialoorosomucoid can bind to its receptor which is unique in liver cells. Results: This complex which containing foreign gene can be delivered into liver cells by receptor mediated endocytosis in an physiological-like way, and after reacted with lysosome, foreign DNA is released and can be translated into protein. Conclusion:Compared with virus-mediated gene transfer, receptor mediated gene transfer is...