10 biggest U.S. losers for the week.

 10 BIGGEST U.S. LOSERS FOR THE WEEK  (By Percent)  Hana Bio             -50.91 Simulations Plus     -23.91 CollaGenex           -22.39 Generex Biotech      -18.29 Northwest BioThera   -17.50 Alnylam              -16.48 Cel-Sci              -16.28 Repligen             -16.14 Aphton               -14.78 Tripos …