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Subsequent Events	6 Months Ended
	Jun. 30, 2013
Subsequent Events [Abstract]
Subsequent Events	Note 13. Subsequent Events In July 2013, we received approximately $3.8 million as the initial disbursement of the loan provided under the CIRM Loan Agreement. Including these proceeds, our pro forma cash, cash equivalents and marketable securities as of June 30, 2013 would have been approximately $28.0 million.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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