Some weeks ago I read the Wired article about James P. Allison - the harmonica playing Texan. I liked the article (not in facebook manner, just plain liked), and then sort of forgot about it. Until I heard about it on the radio. He has, along with Tasuko Honjo, won the Nobel Price in Medicine.
In short: they have found a protein called "CTLA-4". This inhibits, or acts as a break for, the immune system and it's ability to attack cancer tumors. At this point we have surpassed my understanding of biology and medicine, though I found the Wired article interesting. This accomplishment sure is appreciable. So from here: congrats!