A bioink made of gelatin called CELLINK gelatin methacrylate (GelMA) gives mammalian cells the essential elements of their natural habitat.

GelMA has been modified with methacryloyl groups so that it can crosslink when exposed to UV light or a photoinitiator (like LAP; available with INKREDIBLE+, BIO X, and a 365 nm or 405 nm photocuring system) in a 0.25% LAP photoinitiator form.