Monoamine‐containing cell bodies in the squirrel monkey brain

Fifteen catecholamine‐containing cell groups and eight indoleamine‐containing cell groups are present in the brain of the squirrel monkey. Most of the catecholamine‐containing cell groups (12) are similar to catecholamine‐containing cell groups previously described in the rat. However, three catecholamine‐containing cell groups not previously noted are found in the squirrel monkey brain. The indoleamine‐containing cell groups are found within, or adjacent to, the raphe nuclei. Differences between the localization of indoleamine‐containing cell bodies in the brain of the rat and the squirrel monkey are minor.