Collagenase Type 4Prepared to contain lower tryptic activity levels to limit damage to membrane proteins and receptors but with normal to above normal collagenase activity. Suggested for pancreatic islet primary isolation. A dialyzed, lyophilized powder. Store at 2-8C.This material is sold for in-vitro use only in manufacturing and research and is not suitable for use in humans or animals. This material should be handled with general laboratory precaution.