Toxins, Volume 4 (2012)
- Issue 1 (January 2012), Pages 1-41
- Issue 2 (February 2012), Pages 42-156
- Issue 3 (March 2012), Pages 157-227
- Issue 4 (April 2012), Pages 228-295
- Issue 5 (May 2012), Pages 296-389
- Issue 6 (June 2012), Pages 390-486
- Issue 7 (July 2012), Pages 487-579
- Issue 8 (August 2012), Pages 580-632
- Issue 9 (September 2012), Pages 633-767
- Issue 10 (October 2012), Pages 768-955
- Issue 11 (November 2012), Pages 956-1414
- Issue 12 (December 2012), Pages 1415-1600