Corrections: In the article “Generation of Distinct Types of Periglomerular Olfactory Bulb Interneurons during Development and in Adult Mice: Implication for Intrinsic Properties of the Subventricular Zone Progenitor Population” by Silvia De Marchis, Serena Bovetti, Barbara Carletti, Yi-Chun Hsieh, Donatella Garzotto, Paolo Peretto, Aldo Fasolo, Adam C. Puche, and Ferdinando Rossi, which appeared on pages 657–664 of the January 17, 2007 issue, Figure 4, D and F, were erroneously labeled; they should have been labeled TH and CB, respectively. Also, in legend of the figure, the statement “D–N, Representative images of EGFP-positive cells double stained for CB (D, G, L), CR (E,H,M), and TH (F,I,N)” should read “D–N, Representative images of EGFP-positive cells double stained for TH (D, G, L), CR (E,H,M), and CB (F, I,N).”