Figure 4.

Axonal features of group 2 and 3 cells. (A) Axons of group 2 and 3 cells avoid layer 1. The 9 cells with axons that turn or hook are shown, all oriented with respect to the medial-lateral axis above. Note the preference of direction medially. (B) Light microscope images of section of two cells’ axons in the area boxed in the reconstructions below. Swellings in the axon indicated by arrow heads are possible boutons, found along the axons in layer 2/3.