Cat. GG-18-1.5-Laminin: 18mm diameter, #1.5 thickness, 60 pieces of CE certified crystal clear German glass coverslips with mouse Laminin coating over PDL layer on both sides of coverslips for cell culture, sealed 15 pieces per bag x 4 = 60, sterilized, ready to use, suitable for 12 well plates, store -20C freezer with life of 1/2 year. Laminin coating is the best for primary neuron cultures