Selected Balance Sheet Information

6 Months Ended

Jun. 30, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Supplemental Balance Sheet Disclosures [Text Block]

5.  Selected Balance Sheet Information

Prepaid expenses and other current assets (in thousands)

	June 30, 2013		December 31, 2012
Intrexon prepaid research and development expenses	$	1,719	$	2,412
Other receivables		53		17
Prepaid expenses		108		80
Total	$	1,880	$	2,509

The anticipated Intrexon research and development expenses for the next twelve months are classified as a current asset. The Company may terminate the arrangement at any time and receive a cash refund of the remaining balance minus any amounts owed to Intrexon.

Property and equipment (in thousands)

	June 30, 2013		December 31, 2012
Manufacturing equipment	$	152	$	297
Computer and office equipment		48		35
Laboratory equipment		133		133
		333		465
Less accumulated depreciation		(178)		(242)
Total	$	155	$	223