Transfection efficiency of chitosan and thiolated chitosan in retinal pigment epithelium cells: A comparative study.

Objective: Gene therapy relies on efficient vector for a therapeutic effect. Efficient non-viral vectors are sought as an alternative to viral vectors. Chitosan, a cationic polymer, has been studied for its gene delivery potential.

Use of electrochemical techniques to characterize methamidophos and humic acid specifically adsorbed onto Pt and PtO films.

Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were employed to study methamidophos (MAP) and humic acid (HM) specifically adsorbed onto Pt and PtO films in pH-7.0 universal buffer. The approach was found to be sufficiently selective for use in studies involving adsorption of species in environmental systems (e.