1,2,4,6,11,12,13,14 [11] 1 [3,4,9,12] 1 [10] 1 [8] 1 1 [7] d 2 2 2 2 [2] [1] http://rsb.info.nih.gov [1] t p n [1] n n n 1 Fig. 1 1 n n Fig. 2 2/4 1 n 1 n 1 1 Fig. 2 1 1 [3,9,12] 1 [1] 1 [10] [8] Fig. 3 Fig. 3 1 1 Fig. 3 1 1 12 13 [11] 11 11 11 [11] 1,12&13receptors 12&13 [6] 12 13 2 12 13 [11] 12 12 13 13 [5] 13 13