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Detailed morphology of incertotectal neurons in the gray squirrel following a large injection of WGA-HRP into the SC. B. The injection site in this case only extended slightly into the periaqueductal gray. A. The somata of labeled incertotectal cells (Cells A–E) are typically fusiform in appearance. The dendrites branch sparsely and even the tertiary dendrites extended in the plane of the nucleus. The locations of the labeled cells in A are indicated in C.
