Quarterly report pursuant to Section 13 or 15(d)

4. Property and Equipment, net (Details)

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4. Property and Equipment, net (Details) - USD ($)
Mar. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment [Line Items]    
Property and equipment - at cost $ 354,486 $ 349,057
Less accumulated depreciation (314,403) (306,691)
Property and equipment - net 40,083 42,366
Laboratory Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment - at cost 264,583 264,583
Office and Computer Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment - at cost 42,799 37,370
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment - at cost 26,841 26,841
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment - at cost $ 20,263 $ 20,263