Convenient, ready-to-use polystyrene microplates are coated with extracellular matrix (ECM) proteins or synthetic polypeptides. These molecules provide an inert scaffolding that participates directly and indirectly in the regulation of cell growth and proliferation. Ideal for serum-free and serum-reduced cultivation or for differentiation of individual cell types. Plates are consistently coated with Collagen Type 1, Fibronectin, Laminin, Poly-D-Lysine, or Poly-L-Lysine, and feature a "Best Before" date and lot number. All plates are supplied with lids and have a footprint conforming to the ANSI/SBS 1-2004 Standard.