E. Inventories

Our major classes of inventories were as follows as of September 30, 2013 and December 31, 2012 (in thousands):

	September 30, 2013		December 31, 2012
Raw materials	$	5,151	$	2,652
Work in process	5,835		2,524
Finished goods	3,708		7,275
Total inventories	$	14,694	$	12,451

In May 2013, Takeda recalled one specific batch of Rienso from the Swiss market. The batch was only distributed to and sold in Switzerland and the recall was limited to the specific batch and specifically in Switzerland. We and Takeda have completed an investigation regarding the specific Swiss batch of Rienso and the reported adverse events and Takeda has filed a report with the Swiss Agency for Therapeutic Products, commonly known as SwissMedic. During the nine months ended September 30, 2013, we expensed $0.5 million of inventory related to this batch of Rienso which we no longer believed was suitable for sale and which was the subject of the voluntary recall by Takeda in the Swiss market.