Fig. 6.

TG axon growth patterns in a choice paradigm involving rat WP and chick MR (A) Schematic illustration of the culture set up with either chick or rat TG (R: rostral, D: dorsal). (B,C) Rat TG explants provide dense innervation to the WP (right side in each) and sparse innervation into the chick MP (arrows, left side in each). These axons form a distinct follicular pattern in the WP. (D,E) When given the same choice, chick TG axons behave much like rat TG axons, providing dense and patterned innervation to the WP and sparse innervation (arrows) to their own target, the MP. DiI labeling. Scale bar=200 µm.