Eztransfector ^TM in vitro Transfection Reagent is a cationic polymer transfect reagent.  This cationic polymer conjugates peptides which binding cell surface receptors.   The solution is stable at 4°C. Stability decreases if buffered. The efficient gene transfer activity of Eztransfector^TM is related to its capacity for condensing DNA and binding cell surface. Eztransfector ^TM has a high cationic-charge density potential which makes it an excellent DNA condensing and gene-delivering agent.   Eztransfector ^TM provides superior transfection efficienc y and significant low er toxicity when compared to various cationic lipids and polymers in a wide number of cell types .