Biotechnology firms

The top 10 publicly-traded biotechnology companies, ranked by 2008 sales, are:

Amgen
Genentech
Serono
Biogen Idec
Chiron Corporation
Genzyme
MedImmune
Pfizer
Millennium Pharmaceuticals
Applied Biosystems


Source: http://en.wikipedia.org/wiki/Biotechnology#Biotechnology_firms