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PROPERTY, EQUIPMENT and LEASEHOLD IMPROVEMENTS
3 Months Ended
Mar. 31, 2013
PROPERTY, EQUIPMENT and LEASEHOLD IMPROVEMENTS [Abstract]  
PROPERTY, EQUIPMENT and LEASEHOLD IMPROVEMENTS
NOTE 7.              PROPERTY, EQUIPMENT and LEASEHOLD IMPROVEMENTS

Property, equipment and leasehold improvements, net, consisted of the following at March 31, 2013 and December 31, 2012:

Property, equipment and leasehold improvements
 
March 31, 2013
  
December 31, 2012
 
Laboratory equipment
 $424,888  $424,888 
Manufacturing equipment
  1,547,572   1,547,572 
Computers, office equipment, and furniture
  140,360   140,360 
Computer software
  4,108   4,108 
Leasehold improvements
  95,841   95,841 
    2,212,769   2,212,769 
Less: accumulated depreciation and amortization
  ( 1,432,622)  (1,367,234)
Property, equipment and leasehold improvements, net
 $780,147  $845,535 

Depreciation expense on property, equipment and leasehold improvements was $65,388 and $75,261 for the three months ended March 31, 2013 and 2012, respectively.