REFERENCES:
1. Kuby, Janis. Immunology. New York, United States: W.H.Freeman and Company, 1994.

2. Hyde, Richard M. Immunology. Pennsylvania, United States: Williams & Wilkins, 1995.

3. Stedman's Medical Dictionary. Baltimore, United States: Williams & Wilkins, 1990.

4. Benjamini, Eli and Leskowitz, Sidney. Immunology: A Short Course. New York, United States: Alan R. Liss, Inc., 1988.

5. Wilson, Jean D. et al. Harrison's Principles of Internal Medicine: Twelfth Edition. United States: McGraw-Hill Inc., 1991

6. Alberts, Bruce et al. Molecular Biology of the Cell. New York United States: Garland Publishing Inc., 1989.

ACKNOWLEDGEMENTS:
I would like to thank Drs. T. Lee, A. Skaro, R. Liwski and Georgiana Daniel for their teaching and mentoring. As well as, Mrs. Donnelly, Mrs. Singh, Brooke Bateman, Rebecca Pace and my parents for their support.