Inventories

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consist of the following:

	September 30,		December 31,
	2018		2017
Raw materials	$	216,671	$	190,045
Work-in-process	435,671		302,042
Finished goods	28,397		21,791
Deferred costs	358,940		212,260
	$	1,039,679	$	726,138

Deferred costs represent the costs of product manufactured and shipped to the Company's collaborators for which recognition of revenue has been deferred.