Fig. 1. Light (A, B) and electron micrographs (C) showing HRP-labeled, jaw-closing α-motoneuron (arrow) and γ-motoneurons (arrowheads) in the trigeminal motor nucleus (Vmo). B is an enlargement of the boxed area in A, and C is a further enlargement of the same field obtained with electron microscopy. Vp in A indicates the principal trigeminal nucleus. The boundaries of the motoneurons are outlined with a dashed line in C. Scale bars, 500 μm in A and 5 μm in C.
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