1. Poole, A.R., Tiltman, K.J., Recklies, A.D. and Stoker, A.M., Nature, 273 (1978) 545.
2. Recklies, A.D., Tiltman, K.J., Stoker, A.M. and Poole, A.R., Cancer Res., 40 (1980) 550.
3. Pietras, R.J., Szego, C.M., Mangan, C.E., Seeler, B.J., Burtnett, M.M. and Orevi, M., Obstet. Gynecol., 52 (1978) 321.
4. Gottesman, M.M., Proc. Natl. Acad. Sci. USA, 75 (1978) 2767.
5. Gottesman, M.M. and Sobel, M.E., Cell, 19 (1980) 449.