... be caused by the cell function raised by the addition of serum since major components in serum like albumin and globulin have little effect on the transfection efficiency of chitosan–based polyplexes ... them H–D, 13C, 17O, 29Si, 33S, 73Ge, 117,119Sn, 199,201Hg, and 235U (Buchachenko, 2009). By analogy with “electron spin catalysis”, the enhancement of the reaction rate by the ... from polyplexes in the nucleus, translation and transcription are conducted by gene expression system to produce therapeutic proteins. 3. Non-degradable cationic polymers as non-viral gene...