Note 5 - Property and Equipment (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2020

Dec. 31, 2019

Notes Tables

Property, Plant and Equipment [Table Text Block]

	March 31, 2020			December 31, 2019
Laboratory equipment	$	534,577		$	534,577
Leasehold improvements		115,605			115,605
Other furniture, fixtures & equipment		11,736			11,736
Total property and equipment		661,918			661,918
Accumulated depreciation and amortization		(652,306	)		(651,312	)
Property and equipment, net	$	9,612		$	10,606

	2019			2018
Laboratory equipment	$	534,577		$	530,306
Leasehold improvements		115,605			115,605
Other furniture, fixtures & equipment		11,736			28,685
Total property and equipment		661,918			674,596
Accumulated depreciation and amortization		(651,312	)		(663,246	)
Property and equipment, net	$	10,606		$	11,350