Note 5 - Property and Equipment

3 Months Ended

12 Months Ended

Mar. 31, 2017

Dec. 31, 2016

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

March 31, 2017

and

December 31, 2016:

	March 31, 2017			December 31, 2016
Laboratory equipment	$	530,306		$	525,956
Leasehold improvements		115,605			115,605
Other furniture, fixtures & equipment		28,685			28,685
Total property and equipment		674,596			670,246
Accumulated depreciation and amortization		(622,316	)		(615,418	)
Property and equipment, net	$	52,280		$	54,828

3.

          Property and Equipment

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

December 31, 2016

and

2015:

	2016			2015
Laboratory equipment	$	525,956		$	525,956
Leasehold improvements		115,605			115,605
Other furniture, fixtures & equipment		28,685			28,685
Total property and equipment		670,246			670,246
Accumulated depreciation and amortization		(615,418	)		(586,638	)
Property and equipment, net	$	54,828		$	83,608

Depreciation and leasehold amortization expense was

$28,780,

$28,935,

and

$59,037

during the years ended

December 31, 2016,

2015

and

2014,

respectively.