Yang, J. C., D. Perry- Lalley, et al. (1990). "An improved method for growing murine tumor-infiltrating lymphocytes with in vivo antitumor activity." J Biol Response Mod 9(2): 149-59. 221. Yingling, J. M., M. B. Datto, et al . (1997). "Tumor suppressor Smad4 is a transforming growth factor beta-inducible DNA binding protei n." Mol Cell Biol 17(12): 7019-28. 222.