Quoted from NY times.
This is very interestinng article.
Take a look!!
If you would like to read whole article, go to http://www.nytimes.com/2002/03/21/sp...ts/21DRUG.html
Now, through the World Anti-Doping Agency, the I.O.C. wants to anticipate the possibility that athletes will begin re-engineering certain genes to strengthen their muscles, increase their oxygen-carrying capacity, block their pain or speed their pace of healing from injury.