0020 - Statement - Statements of Operations link:presentationLink link:calculationLink link:definitionLink 0040 - Statement - Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 0010 - Statement - Balance Sheets link:presentationLink link:calculationLink link:definitionLink 0015 - Statement - Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1010 - Disclosure - DESCRIPTION OF BUSINESS link:presentationLink link:calculationLink link:definitionLink 8020 - Disclosure - BASIS OF PRESENTATION link:presentationLink link:calculationLink link:definitionLink 8040 - Disclosure - RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS link:presentationLink link:calculationLink link:definitionLink 1030 - Disclosure - LIQUIDITY AND CAPITAL RESOURCES link:presentationLink link:calculationLink link:definitionLink 8030 - Disclosure - BASIC AND DILUTED NET LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 1050 - Disclosure - LICENSE AGREEMENTS link:presentationLink link:calculationLink link:definitionLink 8000 - Disclosure - INVESTMENTS link:presentationLink link:calculationLink link:definitionLink 1070 - Disclosure - CONVERTIBLE SENIOR NOTES link:presentationLink link:calculationLink link:definitionLink 1100 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 1090 - Disclosure - STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 8010 - Disclosure - SUBSEQUENT EVENT link:presentationLink link:calculationLink link:definitionLink 0000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 1140 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 1020 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 1060 - Disclosure - PROPERTY AND EQUIPMENT link:presentationLink link:calculationLink link:definitionLink 1080 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 1110 - Disclosure - RETIREMENT PLAN link:presentationLink link:calculationLink link:definitionLink 1120 - Disclosure - LEASE ARRANGEMENTS link:presentationLink link:calculationLink link:definitionLink 1130 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 1150 - Disclosure - SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 1040 - Disclosure - ACQUISITION OF NET ASSETS OF CELL GENESYS link:presentationLink link:calculationLink link:definitionLink 0030 - Statement - Statements of Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink