Seem like there are a whole bunch of guidelines to the donation of bone barrow, including those involving cancer - according to this site on bone marrow donation: http://www.marrow.org/JOIN/Med_Guidelines_Join/index.html

Anne-Marie
CG to son, Paul (age 33, non-smoker) SCC Stage 2, Surgery 9/21/06, 1/6 tongue Rt.side removed, +48 lymph nodes neck. IMRTx28 completed 12/19/06. CT scan 7/8/10 Cancer-free! ("spot" on lung from scar tissue related to Pneumonia.)