Figure 7.
Morphology and neurochemical identity of ICX-OT projection neurons. A, Relationship between soma size and number of primary dendrites for CaMKIIα ICX neurons (n=124). Dotted line is linear regression. The largest cells had, on average, one more primary dendrite than the smallest cells. B, Similar data plotted for four neurochemical classes of ICX-OT projection neurons (n = 128). Triangles, CaMKIIα+, calretinin+; circles, CaMKIIα+, calretinin-; +, CaMKIIα-, calretinin+; squares, CaMKIIα-, calretinin-. C, Prevalence of the four neurochemical classes within the ICX-OT projection. D, Mean number of primary dendrites (left) and soma size (right) for CaMKIIα ICX neurons (CaM), retrogradely labeled ICX-OT neurons (All), and the four neurochemical classes. C, CaMKIIα; r, calretinin. For these morphological features, no difference was observed between the neurochemical classes.