1. C. A. Mims, "Interaction of viruses with the immune system," Clin. Exp. Immunol.,66, 1?16 (1986).
2. G. Gerna, M. G. Revello, E. Percivalle, and M. Torsellini, "Viral infection in immunocompromised patients," Ann. Inst. Super. Sanita,23, No. 4, 753?760 (1987).
3. D. A. Waterman, A Guide to Expert Systems, Addison-Wesley, Reading, MA (1986).
4. S. Pestka, J. A. Langer, K. C. Zoon, et al., "Interferons and their action," Ann. Rev. Biochem.,56, 727 (1987).
5. J. Ennen, M. Ernst, and N. D. Flad, "Activation of human monocytes by interleukin-2 (IL-2): requirement of intercellular interaction," J. Biolum. Chemilum.,2, No. 4, 202 (1988).