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Selected Quarterly Financial Information (UNAUDITED) (Tables)
 12 Months Ended
Dec. 31, 2012
Selected Quarterly Financial Information (UNAUDITED) [Abstract]  
Selected Quarterly Financial Information
 
 
First Quarter
 
 
Second
Quarter
 
 
Third Quarter
 
 
Fourth
Quarter
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Year Ended December 31, 2012
 
 
 
 
 
 
 
 
 
 
 
 
Revenues, net
 
$
631,946
 
 
$
949,746
 
 
$
833,817
 
 
$
1,065,547
 
Operating expenses
 
 
6,547,486
 
 
 
7,029,077
 
 
 
6,780,375
 
 
 
8,124,795
 
Loss from operations
 
 
(5,915,540
)
 
 
(6,079,331
)
 
 
(5,946,558
)
 
 
(7,059,248
)
Net loss attributable to BioTime, Inc.
 
 
(4,973,342
)
 
 
(5,457,222
)
 
 
(4,958,014
)
 
 
(6,037,125
)
Basic and diluted net loss per share
 
 
(0.10
)
 
 
(0.11
)
 
 
(0.10
)
 
 
(0.12
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Year Ended December 31, 2011
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Revenues, net
 
$
824,629
 
 
$
755,553
 
 
$
1,143,054
 
 
$
1,631,526
 
Operating expenses
 
 
4,850,516
 
 
 
5,736,547
 
 
 
5,375,419
 
 
 
7,078,711
 
Loss from operations
 
 
(4,027,887
)
 
 
(4,980,994
)
 
 
(4,232,365
)
 
 
(5,447,185
)
Net loss attributable to BioTime, Inc.
 
 
(3,362,132
)
 
 
(4,277,928
)
 
 
(3,737,626
)
 
 
(5,137,814
)
Basic and diluted net loss per share
 
 
(0.07
)
 
 
(0.09
)
 
 
(0.08
)
 
 
(0.10
)