Grayray

Elan, Biogen Idec Won't Gain Much from Tysabri Approval

Brett,

Dr_Dave has done an excellent job in explaing the issues of PML. Unfortunately, you and many others are misinformed as to the issues of PML.

Hopefully others who are doing research will check deeper into the PML issues and thereby stop basing there economic theories on false information.

Time will tell, but I am sure that in the near future both MS and CD patients will receive great benefits from Tysabri.