Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details)

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Note 3 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($)
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Revenue from contract with customer $ 0 $ 22,486
Diagnostics Segment [Member] | Royalty [Member] | Europe [Member]    
Revenue from contract with customer $ 0 $ 22,486