Quarterly report pursuant to Section 13 or 15(d)

4. Property and Equipment, net

4. Property and Equipment, net

6 Months Ended

Jun. 30, 2015

Property, Plant and Equipment [Abstract]

Property and equipment, net consists of the following:

	June 30, 2015			December 31, 2014
Laboratory equipment	$	255,813		$	254,150
Office and computer equipment		35,190			189,459
Leasehold improvements		26,841			92,354
Furniture and fixtures		20,263			50,150
Property and equipment – at cost		338,107			586,113
Less accumulated depreciation		(255,292	)		(466,664	)
Property and equipment – net	$	82,815		$	119,449

Depreciation expense was $8,551 and $16,526 for the three months ended June 30, 2015 and 2014, respectively, and $31,463 and $32,515 for the six months ended June 30, 2015 and 2014, respectively.