4. Property and Equipment, net (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2019

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Schedule of Property and Equipment, Net

	March 31, 2019			December 31, 2018
Office and computer equipment	$	42,288		$	42,289
Leasehold improvements		–			26,841
Furniture and fixtures		14,738			20,263
Property and equipment – at cost		57,026			89,393
Less accumulated depreciation		(53,528	)		(84,437	)
Property and equipment – net	$	3,498		$	4,956

	December 31, 2018			December 31, 2017
Laboratory equipment	$	–		$	264,583
Office and computer equipment		42,289			46,634
Leasehold improvements		26,841			26,841
Furniture and fixtures		20,263			20,263
Property and equipment – at cost		89,393			358,321
Less accumulated depreciation		(84,437	)		(330,475	)
Property and equipment – net	$	4,956		$	27,846