Note 3 - Property and Equipment

12 Months Ended

Dec. 31, 2019

Notes to Financial Statements

Property, Plant and Equipment Disclosure [Text Block]

3.

     Property and Equipment

Property and equipment as shown on the accompanying Consolidated Balance Sheets is composed of the following as of

December 31, 2019

and

2018:

	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

Depreciation expense was

$8,350

and

$19,801

during the years ended

December 31, 2019

and

2018,

respectively.