More than 35 million Americans suffer from allergiesthe irritating and sometimes incapacitating ailments caused by overreaction of the body's immune system to substances like ragweed pollen, mold spores or a wide variety of foods. Doctors have for decades sought better ways to alleviate allergy symptoms, which include sneezing, shedding tears, itching and swelling. Now, after three years of work, Dr. Robert Hamburger, 52, of the University of California at San Diego, has synthesized a small molecule that interferes with the immune mechanism and helps prevent the discomforts of the allergic.
Hamburger based his...