Cover Caption
About the cover: Close-up of the EL2 as observed in the recent X-ray structure of the β2-adrenergic receptor (Cherezov et al., 2007) (A) and homology model of the human H4R (B). See the article by Lim et al. on page 88 of this issue.
About the cover: Close-up of the EL2 as observed in the recent X-ray structure of the β2-adrenergic receptor (Cherezov et al., 2007) (A) and homology model of the human H4R (B). See the article by Lim et al. on page 88 of this issue.