Assertion: collagen | /r/ObjectUse | used for example
Facets:
Source sentences:
text: These properties of collagen have been used for various biomedical applications—for example, as drug delivery systems including: collagen shields in ophthalmology; sponges for burns/wounds; mini pellets and tablets for protein delivery; gel formulation in combination with liposomes for sustained drug delivery; a controlling material for transdermal delivery; nano particles for gene delivery; and basic matrices for cell culture systems.