I registered as a bone marrow donor at Notre Dame while visiting the campus with my daughter in April. Perhaps your son's Bar Mitzvah post had a subliminal influence on me, or maybe it was a HC coincidence. I have mixed feelings about this. The recipient of my marrow whenever it happens, will receive a new chance at a normal life, but then again my marrow is probably loaded with some funky legacies................
Congrats to your son!