TODAY: Chai Lifeline will be holding a Bone marrow Drive for men and women today at the Esther Gerber Hall (6th and Madison) from 9:00 a.m.-10:00 p.m. in an effort to find a match for two desperate patients, for whom time is running out. A simple test will determine if you are a match. Viable genetic matches will probably be found among those of Eastern European Jewish descent. No blood is drawn during the test and only a cotton swab is used. For additional information, call the Chai Lifeline bone marrow hotline at 646-761-6963.