| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | JENNISON ASSOCIATES LLC | 2,355,056 | 6.30 | $11,280,718 | 30-Sep-09 | | PRICE (T.ROWE) ASSOCIATES INC | 1,715,650 | 4.59 | $8,217,963 | 30-Sep-09 | | MPM Asset Management, LLC | 5,790,841 | 15.49 | $27,738,128 | 30-Sep-09 | | TIAA-CREF INVESTMENT MANAGEMENT, LLC | 559,392 | 1.50 | $2,679,487 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 471,519 | 1.26 | $2,258,576 | 30-Sep-09 | | S.A.C. CAPITAL ADVISORS, LLC | 275,000 | .74 | $1,317,250 | 30-Sep-09 | | CR Intrinsic Investors, LLC | 230,000 | .62 | $1,101,700 | 30-Sep-09 | | RCM CAPITAL MANAGEMENT | 223,631 | .60 | $1,071,192 | 30-Sep-09 | | STATE STREET CORPORATION | 206,952 | .55 | $991,300 | 30-Sep-09 | | DEUTSCHE BANK AKTIENGESELLSCHAFT | 192,582 | .52 | $922,467 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | JENNISON SECTOR FDS-JENNISON HEALTH SCIENCES FD | 1,748,956 | 4.68 | $5,631,638 | 31-Aug-09 | | PRICE (T.ROWE) HEALTH SCIENCES FUND | 1,089,200 | 2.91 | $3,627,036 | 30-Jun-09 | | COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT | 545,579 | 1.46 | $1,816,778 | 30-Jun-09 | | ISHARES RUSSELL 2000 INDEX FD | 221,701 | .59 | $1,061,947 | 30-Sep-09 | | Valic Company I-Health Sciences Fd | 161,000 | .43 | $518,420 | 31-Aug-09 | | Allianz Fds-RCM Wellness Fd | 129,384 | .35 | $416,616 | 31-Aug-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 117,675 | .31 | $563,663 | 30-Sep-09 | | John Hancock Trust-Health Sciences Tr | 107,095 | .29 | $356,626 | 30-Jun-09 | | PACIFIC SELECT FUND-HEALTH SCIENCES PORTFOLIO | 106,100 | .28 | $353,313 | 30-Jun-09 | | AXA PREMIER VIP MULTIMANAGER HEALTH CARE PORTFOLIO | 63,943 | .17 | $212,930 | 30-Jun-09 |
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Value shown is computed using the security's price on the report date given.
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