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PROPERTY, EQUIPMENT and LEASEHOLD IMPROVEMENTS
6 Months Ended
Jun. 30, 2011
PROPERTY, EQUIPMENT and LEASEHOLD IMPROVEMENTS  
PROPERTY, EQUIPMENT and LEASEHOLD IMPROVEMENTS
NOTE 7.
PROPERTY, EQUIPMENT and LEASEHOLD IMPROVEMENTS

Property, equipment and leasehold improvements, net, consisted of the following at June 30, 2011 and December 31, 2010:

Property, equipment and leasehold improvements
 
June 30, 2011
  
December 31, 2010
 
  Laboratory equipment
 $424,888  $424,888 
  Manufacturing equipment
  1,483,223   1,483,223 
  Computers, office equipment, and furniture
  140,360   140,360 
  Computer software
  4,108   4,108 
  Leasehold improvements
  95,841   95,841 
    2,148,420   2,148,420 
  Less: accumulated depreciation and amortization
  ( 925,242)  (772,936)
  Property, equipment and leasehold improvements, net
 $1,223,178  $1,375,484 

Depreciation expense on property, equipment and leasehold improvements was $75,448 and $49,990 for the three months ended June 30, 2011 and 2010, respectively, and was $152,306 and $99,980 for the six months ended June 30, 2011 and 2010, respectively.