i signed up to be a bone marrow donor
and you can too:
it's super easy.
they send you the instructions in the mail
and then you swab your cheeks
and then you stick them in this uber cool pop-up-book-like-thingie
and ship it off.
then they contact you and let you know when/if/how they need you.
"Whatever you give is acceptable if you give it eagerly. And give according to what you have, not what you don't have." - 2 Corinthians 8:12