“ARPP-21, a Cyclic AMP-Regulated Phosphoprotein Enriched in Dopamine-Innervated Brain Regions. II. Immunocytochemical Localization in Rat Brain,” by C. C. Ouimet, H. C. Hemmings, Jr., and P. Greengard, Journal of Neuroscience 9(3): 865–875.
The correct caption for Figure 9 is: “Figure 9. Photomicrographs of ARPP-21 immunostaining in cerebral cortex. A, Layers I and II of primary parietal cortex. The most heavily labeled neurons (for examples, see arrows) were near the border (arrowhead) between layers I and II. Most of the labeled neurons had a pyramidal shape. Many dendrites could be traced into layer I where they branched profusely. B, Anterior cingulate cortex. Cells in layers II/III were much more strongly labeled than cells in the other layers. The layer II/III cells sent dendrites through layer I towards the pial surface in fascicles such as the one outlined by the dashed lines. Scale bars, 100 ¨m.”