Cover Picture: Cellular and histological techniques highlight aspects of dendritic interactions during development and in certain disease states, as described in the articles of this special issue. Included in this montage are immunohistochemical, camera lucida, Golgi stained, and electron microscopic images of neurons from brain tissue supplied by Kaufmann; Lambe and Goldman-Rakic; Greenough; Geinisman; and Walkley.
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