1. Allavena, P., Introna, M., Mangioni, C., and Mantovani, A., 1981, Inhibition of natural killer activity by tumor-associated lymphoid cells from ascitic ovarian carcinomas, J. Natl. Cancer Inst. 67:319–325.
2. Biondi, A., Bordignon, C., Peri, G., Donati, M. B., Vicenzi, E., Ghezzi, P., Salmona, M., and Mantovani, A., 1983, Regulation of the tumoricidal and suppression activity of human macrophages, in: Advances in Immunopharmacology 2 (J. W. Hadden, L. Chedid, P. Dukor, F. Spreafico, and D. Willoughby, eds.), Pergamon Press, Oxford, pp. 251–256.
3. Biron, C. A., and Welsh, R. M., 1982, Proliferation and role of natural killer cells during viral infection, in: NK Cells and Other Natural Effector Cells (R. B. Herberman, ed.), Academic Press, New York, pp. 493–498.
4. Bordignon, C., Villa, F., Allavena, P., Introna, M., Biondi, A., Avallone, R., and Mantovani, A., 1982, Inhibition of natural killer activity by human bronchoalveolar macrophages, J. Immunol. 129:587–591.
5. Brunda, M. J., Herberman, R. B., and Holden, H. T., 1980a, Inhibition of murine natural killer cell activity by prostaglandins, J. Immunol. 124:2682–2687.