Been differentiating ES/IPS cells into neurons. I need to culture them on glass coverslips for downstream microscopy. I find that neurons don't attach well to coverslips coated with Poly-Lysine, PL/Laminin and PL/LM/Fibronectin combinations. LM alone, coating looks OK except that the attachment is not strong! So, whenever I change medium invariably some cells come off the surface and by the end of incubation period over a couple of weeks many of the cells are gone. Any ideas to get a more firm attachment of neurons to glass coverslips?