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Significant Accounting Policies and Recent Accounting Pronouncements (Policies)
9 Months Ended
Sep. 30, 2014
Accounting Policies [Abstract]  
Use of Estimates, Policy [Policy Text Block]
Use of Estimates
The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The condensed consolidated financial statements include significant estimates for the expected economic life and value of our licensed technology, our net operating loss carry forward and related valuation allowance for tax purposes and our stock-based compensation related to employees and directors, consultants and advisors, including investment banks, among other things. Because of the use of estimates inherent in the financial reporting process, actual results could differ significantly from those estimates.
Fair Value Measurement, Policy [Policy Text Block]
Fair Value Measurements
The carrying amounts of our short-term financial instruments, which primarily include cash and cash equivalents, other short-term investments, accounts payable and accrued expenses, approximate their fair values due to their short maturities. The fair value of our long-term indebtedness is estimated based on the quoted prices for the same or similar issues or on the current rates offered to the Company for debt of the same remaining maturities. The fair values of our derivative instruments are estimated using Level 3 unobservable inputs. See Note 3 for further details.
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Foreign Currency Translation
The functional currency of our wholly owned foreign subsidiary is its local currency.  Assets and liabilities of our foreign subsidiary are translated into United States dollars based on exchange rates at the end of the reporting period; income and expense items are translated at the weighted average exchange rates prevailing during the reporting period.  Translation adjustments for subsidiaries that have not been sold, substantially liquidated or otherwise disposed of are accumulated in other comprehensive income or loss, a component of stockholders' equity.   Transaction gains or losses are included in the determination of net loss.
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash, Cash Equivalents, Short-Term Investments and Credit Risk
Cash equivalents consist of investments in low risk, highly liquid money market funds and certificates of deposit with original maturities of 90 days or less. Cash deposited with banks and other financial institutions may exceed the amount of insurance provided on such deposits. If the amount of a deposit at any time exceeds the federally insured amount at a bank, the uninsured portion of the deposit could be lost, in whole or in part, if the bank were to fail.
 
Short-term investments consist entirely of fixed income certificates of deposit (“CDs”) with original maturities of greater than 90 days and not more than one year. The Company did not have any short-term investments at December 31, 2013.
 
Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash equivalents and short-term investments. Our investment policy, approved by our Board of Directors, limits the amount we may invest in any one type of investment issuer, thereby reducing credit risk concentrations. In addition, our CDs are invested through the Certificate of Deposit Account Registry Service (“CDARS”) program which reduces or eliminates our risk related to concentrations of investments above FDIC insurance levels. We limit our credit and liquidity risks through our investment policy and through regular reviews of our portfolio against our policy. To date, we have not experienced any loss or lack of access to cash in our operating accounts or to our cash equivalents and short-term investments.
Revenue Recognition, Policy [Policy Text Block]
Revenue Recognition
Historically, our revenue has been derived primarily from (i) selling treated samples for gene expression data from stem cell experiments, (ii) providing services under various contracts and grants and (iii) licensing the use of our intellectual property to third parties. Revenue is recognized when there is persuasive evidence that an arrangement exists, delivery of goods and services has occurred, the price is fixed and determinable, and collection is reasonably assured.
Research and Development Expense, Policy [Policy Text Block]
Research and Development
Research and development costs are expensed as they are incurred. Research and development expenses consist primarily of costs associated exclusively with the pre-clinical development and clinical trials of our product candidates.  
Earnings Per Share, Policy [Policy Text Block]
Income (Loss) per Common Share
Basic income (loss) per common share is computed by dividing total net income (loss) available to common stockholders by the weighted average number of common shares outstanding during the period.
 
For periods of net income when the effects are dilutive, diluted earnings per share is computed by dividing net income available to common stockholders by the weighted average number of shares outstanding and the dilutive impact of all dilutive potential common shares. Dilutive potential common shares consist primarily of stock options, restricted stock units and common stock purchase warrants. The dilutive impact of potential common shares resulting from common stock equivalents is determined by applying the treasury stock method. Our unvested restricted shares contain non-forfeitable rights to dividends, and therefore are considered to be participating securities; the calculation of basic and diluted income per share excludes net income attributable to the unvested restricted shares from the numerator and excludes the impact of the shares from the denominator.
 
For all periods of net loss, diluted loss per share is calculated similarly to basic loss per share because the impact of all dilutive potential common shares is anti-dilutive due to the net losses; accordingly, diluted loss per share is the same as basic loss per share for the three- and nine-month periods ended September 30, 2014 and 2013. A total of approximately 40.1 million and 36.1 million potential dilutive shares have been excluded in the calculation of diluted net income per share for the three- and nine-month periods ended September 30, 2014 and 2013, respectively, as their inclusion would be anti-dilutive.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]
Share-Based Compensation
We account for share-based compensation at fair value. Share-based compensation cost for stock options and warrants is determined at the grant date using an option pricing model that uses Level 3 unobservable inputs; share-based compensation cost for restricted stock and restricted stock units is determined at the grant date based on the closing price of our common stock on that date. The value of the award that is ultimately expected to vest is recognized as an expense on a straight-line basis over the requisite service period.
Goodwill and Intangible Assets, Policy [Policy Text Block]
Intangible and Long-Lived Assets
We assess impairment of our long-lived assets using a "primary asset" approach to determine the cash flow estimation period for a group of assets and liabilities that represents the unit of accounting for a long-lived asset to be held and used. Long-lived assets to be held and used are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. The carrying amount of a long-lived asset is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset. During the three- and nine-month periods ended September 30, 2014 and 2013, no impairment losses were recognized.
Income Tax, Policy [Policy Text Block]
Income Taxes
We account for income taxes using the asset and liability approach, which requires the recognition of future tax benefits or liabilities on the temporary differences between the financial reporting and tax bases of our assets and liabilities. A valuation allowance is established when necessary to reduce deferred tax assets to the amounts expected to be realized. We also recognize a tax benefit from uncertain tax positions only if it is “more likely than not” that the position is sustainable based on its technical merits. Our policy is to recognize interest and penalties on uncertain tax positions as a component of income tax expense. Our income tax returns for the past three years are subject to examination by tax authorities and may change upon examination.
New Accounting Pronouncements, Policy [Policy Text Block]
Significant New Accounting Pronouncements
In May 2014, the Financial Accounting Standards Board (FASB) issued ASU 2014-09 – Revenue from Contracts with Customers. This guidance is effective for fiscal years beginning after December 15, 2016 and early adoption is not permitted. We have not yet determined the effects of this new guidance on our financial statements.
 
In August 2014, the FASB issued ASU 2014 – Presentation of Financial Statements – Going Concern. This guidance requires management to evaluate on a regular basis whether any conditions or events have arisen that could raise substantial doubt about the entity’s ability to continue as a going concern. This guidance is effective for fiscal years beginning after December 15, 2016 and early adoption is permitted. We do not expect the adoption of this guidance to have a material impact on our financial statements.