Fig. 4.

Whole mounts of st. 34 IFIB muscles showing the intramuscular nerve branching pattern, using C2 immunoreactivity.a, Control. b, Endo-N treatment, showing very fasciculated branches; although this muscle appeared slightly smaller than the control, this is within the range found in the controls. c, Endo-N plus dTC; note the decrease in defasciculation and branching in the fast region (bracket) and a decrease in branching in the slow region when compared with dTC treatment alone.d, dTC treatment alone (photographed at 100× magnification). Dashed brackets indicate the fast region. Scale bars: a, b, d, 10 μm; c, 5 μm.