When performing demanding cell culture, reliable reagents that are effective and consistent are essential. Matrix Proteins from Cell Guidance Systems are rigorously controlled for quality and functionally tested for optimal performance in cell culture. Our wide range of OptiCol™Collagens are produced from human and rat sources. These collagens are produced under stringent quality control conditions and are the best quality available. Similarly, our Fibronectin and Tropoelastin proteins are of the highest quality allowing optimization of cell culture conditions.