Preface to Sourcebook for Immunology

by Ralph M. Steinman, M.D.

January, 2006

To study immunology today is to be on the cutting edge of research that is important in our lives. Immunology is revealing astonishing things about the system in our body that defends us from foreign germs that could do us harm, much like a country’s military defends the country from invaders.

The microbial world is continuously evolving and producing new infectious threats. You will learn in the following pages that the immune system has many strategies designed to cope with these threats as they evolve.

 Our immune defense is intricate, cunning, and in many ways beautiful. We are glad to have you join us as we continue to learn about this essential human system.