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Note 3 - Property and Equipment, Net
3 Months Ended
Mar. 31, 2017
Notes to Financial Statements  
Property, Plant and Equipment Disclosure [Text Block]
3.
Property and equipment, net
 
Property and equipment consists of the following:
 
    December 31,     March 31,  
    2016     2017  
    (Audited)     (Unaudited)  
             
Office equipment    
17
     
17
 
Laboratory equipment    
49
     
62
 
Furniture    
2
     
2
 
Motor vehicles    
23
     
24
 
Leasehold improvements    
13
     
13
 
     
104
     
118
 
Less: accumulated depreciation    
(24
)    
(30
)
                 
Property and equipment, net    
80
     
88
 
 
Depreciation expenses for the
three
months ended
March
31,
2016
and
2017
were
$5
and
$6,
respectively.