ion", 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 Carcinoma Cells", Bailly, M., Yan, L., Whitesides, G. M., Condeelis, 3. S. and Segall, 3. E., Exp. Cell Res, 1998, 241, 285-299. 607.