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Note 4 - Notes Receivable (Details Textual) - USD ($)
1 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Nov. 30, 2017
Jul. 31, 2017
Advance to Helomics [Member]        
Notes Receivable, Interest Rate, Stated Percentage     8.00%  
Payments to Acquire Notes Receivable     $ 600,000  
Advances to De Lage Landen [Member]        
Payments to Acquire Notes Receivable   $ 67,512.10    
CytoBioscience [Member] | Promissory Notes Receivable [Member]        
Notes Receivable, Interest Rate, Stated Percentage 8.00%     8.00%
Financing Receivable, Net, Total $ 1,112,524 $ 1,070,000    
Notes Receivable, Term 2 years      
Helomics Holding Corp. [Member]        
Financing Receivable, Net, Total $ 167,512.10      
Share Exchange Agreement, Outstanding Receivables, Amount Converted $ 500,000      
Share Exchange Agreement, Shares Received Upon Conversion of Receivables 833,333      
Share Exchange Agreement, Convertible Notes, Percent of Stock 5.00%      
Investment, Ownership Percent 25.00%