Gelatin methacrylate (GelMA) is a gelatin-based bioink that provides mammalian cells with the essential properties of their native environment. GelMA is modied with methacryloyl groups to crosslink with a photoinitiator or exposure to UV light.

GelMa-INX R100 has emerged as one of the gold standards in tissue engineering and biofabrication worldwide. Is based on gelatin derived from natural collagen which has been modified with photopolymerizable functional groups which allow crosslinking of hydrogel after printing.