Note 3 - Property and Equipment

9 Months Ended

12 Months Ended

Sep. 30, 2021

Dec. 31, 2020

Notes to Financial Statements

Property, Plant and Equipment Disclosure [Text Block]

5.         Property and Equipment

Property and equipment as shown on the accompanying Condensed Consolidated Balance Sheets is composed of the following as of September 30, 2021 and December 31, 2020:

	September 30, 2021			December 31, 2020
Equipment and furnishings	$	591,554		$	543,836
Leasehold improvements		115,605			115,605
Total property and equipment		707,159			659,441
Accumulated depreciation and amortization		(538,506	)		(511,700	)
Property and equipment, net	$	168,653		$	147,741

3.         Property and Equipment

Property and equipment as shown on the accompanying Consolidated Balance Sheets is composed of the following as of December 31, 2020 and 2019:

	2020			2019
Laboratory equipment	$	532,100		$	534,577
Leasehold improvements		115,605			115,605
Other furniture, fixtures & equipment		11,736			11,736
Total property and equipment		659,441			661,918
Accumulated depreciation and amortization		(511,700	)		(651,312	)
Property and equipment, net	$	147,741		$	10,606

Depreciation expense was $19,656 and $8,350 during the years ended December 31, 2020 and 2019, respectively.