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Note 9 - Segments (Tables)
 3 Months Ended
Mar. 31, 2020
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
    Three Months Ended March 31, 2020
    Domestic   International   Helomics   Corporate   Total
Revenue   $
279,813
      
-
     $
15,130
      
-
     $
294,943
  
Segment Loss   $
(340,779
 )   $
(69,065
 )   $
(1,412,465
 )   $
(2,707,008
 )   $
(4,529,317
 )
    March 31, 2020
    Domestic   International   Helomics   Corporate   Total
Assets   $
823,804
     $
287,606
     $
21,390,191
     $
2,547,396
     $
25,048,996
  
    December 31, 2019
    Domestic   International   Helomics   Corporate   Total
Assets   $
670,841
     $
298,952
     $
21,275,306
     $
130,411
     $
22,375,510