1. Silverstein AM, 1989, A history of immunology (AcaEnmic Press)
2. Alberts et al., 1989, The Molecular Biology of the Cell, 2nd ed. (Garland, New York)
3. Darnell et al., 1990, Molecular Cell Biology (Freeman/Scientific American, San Francisco)
4. Jaret P and Nilsson L, 1986, National Geographic (June) 702
5. Perelson AS and Weisbuch, 1997, Reviews of Modern Physics 69, 1219