Native Human Skin Collagen type l, 1 mg/ml solution. Type I Collagen is the most abundant type of collagen in the human body, as a major structural matrix protein in skin, and many other tissues (bone, tendon, and fibrous connective tissues). HumaCoat is ideal for many applications including coating tissue culture surfaces or microbeads with a thin layer of collagen to support rapid cell attachment and growth. The optimal collagen concentration used may vary depending on cell type and application and must be titrated for best results. Type I collagen is isolated from human skin sourced strictly from American Association of Tissue Banks (AATB) accredited and FDA registered tissue banks and organ procurement organizations (OPOs). All Humabiologic’s biomaterials are obtained from tissue partners who comply with requirements for transplantable human tissues under 21 CFR 1271 of the U.S. Food and Drug Administration (FDA).