1. Paradoxical Effects of Sphingosine-1-Phosphate
Wendy B. Bollag 
Journal of Investigative Dermatology 
Volume 120, Issue 4, Pages xiii-xiv (April 2003)
DOI: /j x
Copyright © 2003 The Society for Investigative Dermatology, Inc Terms and Conditions

2. Figure 1 Ceramide and Sphingolipid Metabolic Pathways.
Journal of Investigative Dermatology  , xiii-xivDOI: ( /j x)
Copyright © 2003 The Society for Investigative Dermatology, Inc Terms and Conditions