Cover legend: Confocal image of a cerebellar slice showing recorded Purkinje and stellate cells (biocytin labeling; green). Immunoreactivity for NOS-1 (blue) is mainly located in the molecular layer. Blood vessels are immunolabeled for laminin (red). For more information, see the article by Rancillac et al. in the June 28, 2006 issue (Vol. 26, Issue 26, pages 6997–7006).