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Property and Equipment (unaudited)
3 Months Ended
Jul. 31, 2011
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]
Note 3. Property and Equipment

Property and equipment is recorded at cost and consists of laboratory equipment, furniture and fixtures, and computer hardware and software. Depreciation is calculated on a straight-line basis over the estimated useful lives of the various assets ranging from three to seven years. Property and equipment consisted of the following:

   
July 31,
   
April 30,
 
   
2011
   
2011
 
   
(unaudited)
       
Furniture and fixtures
  $ 44,000     $ 10,000  
Computer equipment and software
    167,000       119,000  
Laboratory equipment
    67,000       56,000  
Leasehold improvements
    2,000       2,000  
Software in-progress
    26,000       24,000  
                 
Total property and equipment
    306,000       211,000  
Less: Accumulated depreciation
    (94,000 )     (65,000 )
                 
Property and equipment, net
  $ 212,000     $ 146,000  

Depreciation expense was $29,000 and $10,000 for the three months ended July 31, 2011 and 2010, respectively.