. and Whitesides, G. M., J. Mater. Res., 1998, 13, 3555.3564. 609. "Soft lithography and microfabrication", Brittain, S., Paul, K., Zhao, X.-M. and Whitesides, G., Physics World, 1998, 11, 31-36. 608. "Regulation of Protrusion Shape and Adhesion to the Substratum During Chemotactic Responses of Mammalian Ca