| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | ORACLE INVESTMENT MANAGEMENT, INC. | 1,745,004 | 7.52 | $14,186,882 | 30-Sep-09 | | JAY, JEFFREY R. | 1,635,200 | 7.04 | $13,294,176 | 30-Sep-09 | | Invus Public Equities Advisors, LLC | 1,000,000 | 4.31 | $8,130,000 | 30-Sep-09 | | WELLINGTON MANAGEMENT COMPANY, LLP | 3,165,977 | 13.64 | $25,739,393 | 30-Sep-09 | | FMR LLC | 3,017,970 | 13.00 | $24,536,096 | 30-Sep-09 | | ORBIMED ADVISORS LLC. | 183,500 | .79 | $1,491,855 | 30-Sep-09 | | HOLLENCREST SECURITIES, LLC | 138,202 | .60 | $1,123,582 | 30-Sep-09 | | CALDWELL & ORKIN, INC. | 132,100 | .57 | $1,073,973 | 30-Sep-09 | | PRICE (T.ROWE) ASSOCIATES INC | 101,264 | .44 | $823,276 | 30-Sep-09 | | Invesco Ltd. | 96,521 | .42 | $784,715 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | FIDELITY ADVISOR GROWTH OPPORTUNITIES FUND | 537,233 | 2.31 | $3,868,077 | 31-Oct-09 | | FIDELITY GROWTH COMPANY FUND | 2,332,446 | 10.05 | $16,793,611 | 31-Oct-09 | | VARIABLE INSURANCE PRODUCTS FD III-GROWTH OPPORTUNITIES | 148,291 | .64 | $1,067,695 | 31-Oct-09 | | PRICE (T.ROWE) HEALTH SCIENCES FUND | 82,000 | .35 | $306,680 | 30-Jun-09 | | DFA Investment Dimensions-Canadian Small Company Series | 74,633 | .32 | $357,492 | 31-Jul-09 | | Mutual of America Investment Corp-Small Cap Growth Fund | 39,350 | .17 | $319,915 | 30-Sep-09 | | MUTUAL OF AMERICA INVESTMENT CORP-ALL AMERICA FUND | 6,800 | .03 | $55,284 | 30-Sep-09 | | John Hancock Trust-Health Sciences Tr | 5,977 | .03 | $22,353 | 30-Jun-09 | | DFA International Core Equity Portfolio | 5,111 | .02 | $24,481 | 31-Jul-09 | | Valic Company I-Health Sciences Fd | 4,522 | .02 | $24,057 | 31-Aug-09 |
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Value shown is computed using the security's price on the report date given.
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