Figure 5. Premotor axon boutons onto ChAT+ motoneurons revealing direct premotor control of multiple motor groups.
(A) ChAT-immunostained (red) jaw-opening digastric (Dig) motoneurons showing innervation from labeled genioglossus premotor axons (green). (B) The boxed region in A, and a line scan (right) of an orthogonal slice at the yellow dotted line in A. (C) ChAT-immunostained central MoVII showing innervation from labeled genioglossus premotor axons. (D) The boxed region in C, and a line scan (right) of an orthogonal slice at the yellow dotted line in C. (E) ChAT-immunostained left MoXII showing innervation from labeled left masseter premotor axons. (F) The boxed region in E, and a line scan (right) of an orthogonal slice at the yellow dotted line in E. (G) ChAT-immunostained right MoXII showing innervation from labeled left masseter premotor axons. (H) The boxed region in G, and a line scan (right) of an orthogonal slice at the yellow dotted line in G.