Cat. GG-12- Fibronectin: 12mm diameter, #1 thickness, 60 pieces of CE certified crystal clear German glass coverslips with bovine Fibronectin coating over PDL layer on both sides of coverslips for cell culture and confocal fluorescence microscopy, sealed 15 pieces per bag x 4 = 60, sterilized, ready to use. Its culture quality is better than PLL coated coverslips and PDL coated coverslips and is for long-term culture.