Intangible Assets

6 Months Ended

Jun. 30, 2012

Intangible Assets [Abstract]

Intangible Assets

4. Intangible assets

At June 30, 2012 and December 31, 2011, intangible assets and intangible assets net of amortization were comprised of the following:

	June 30, 2012 (unaudited)			December 31, 2011
Intangible assets	$	25,586,024		$	21,429,488
Accumulated amortization		(3,933,403	)		(2,809,972	)
Intangible assets, net	$	21,652,621		$	18,619,516

BioTime amortizes its intangible assets over an estimated period of 10 years on a straight line basis.  BioTime recognized $1,123,431 and $1,041,520 in amortization expense of intangible assets during the six months ended June 30, 2012 and 2011, respectively.