Fig. 4. Histograms showing bouton volume (A), mitochondrial volume (B), and active zone area (C) of the VGLUT1+ and VGLUT2+ boutons on the jaw-closing (JC) γ-motoneurons and α-motoneurons and on the jaw-opening (JO) α-motoneurons. All parameters are significantly smaller for VGLUT2+ boutons than for VLGUT1+ boutons. Data on JC and JO α-motoneurons are from our previously-published experiments and are provided for comparison .
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