In the above article [Wang Y, Pereira EFR, Maus ADJ, Ostlie NS, Navaneetham D, Lei S, Albuquerque EX, and Conti-Fine BM (2001) Mol Pharmacol 60:1201-1209], Figure 2, A and B, are reproduced from photographs obtained in early experiments that were published previously in the proceedings of the meeting "Neuronal Nicotinic Receptors" in a special issue of the European Journal of Pharmacology [Conti-Fine BM, Navaneetham D, Lei S, and Maus ADJ (2000) Neuronal nicotinic receptors in non-neuronal cells: new mediators of tobacco toxicity? Eur J Pharmacol 393:279-294]. The authors have acknowledged that the same photographs were used inadvertently. They are, however, representative of micrographs obtained from other in situ hybridization experiments performed more recently in the authors' laboratory.