Dear R.C.: The immune system has two major components: antibody-producing cells (B cells) and T cells. Both of these are important in fighting off infections, but T cells are particularly important in ...

Between 1986 and 2003, 43 eligible patients were identified, 29 female and 14 male, ranging in age from 32 years to 88 years at the time of diagnosis. The majority of patients were aged between 50 and ...

Dear Dr. Roach: I was diagnosed with collagenous colitis nearly three years ago. I was prescribed budesonide, which brought it under control. I have tried getting off the medication several times, but ...