Images of transverse section through the ipsilateral pontine nuclei (approximately midpontine rostrocaudal level) showing small, overlapping axonal clusters labeled after injection of FR into SII, and BDA into SI in case SS49. At this level, the patch of BDA labeling arising in SI is located entirely within the boundaries of the FR patch arising in SII. D, dorsal; M, medial. Scale bars = 100 µm

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