S1P1 Receptor Upregulation and Amelioration of Experimental Autoimmune Encephalomyelitis by an S1P1 Antagonist. Cahalan SM, Gonzalez-Cabrera PJ, Nguyen N, Guerrero M, George Cisar EA, Leaf NB, Brown SJ, Roberts E, Rosen H Mol Pharmacol. 2012 Nov 30. PMID: 23204443. Abstract CommentRecommendBookmarkWatch