Serotonin-releasing Fibers in the Forebrain

Serotonergic fibers Serotonergic fibers in the mouse caudate and putamen nuclei. Scale bar = 100 µm.

Serotonin-producing Neurons in the Brainstem

Dorsal raphe nucleus The dorsal raphe nucleus of the long-tailed macaque (Macaca fascicularis).
Aq = cerebral aqueduct

The Serotonin Matrix and Microglia in the Cerebral Cortex

The primary somatosensory cortex of the house mouse (Mus musculus).
blue = cell nuclei, red = serotonergic axons, green = microglia


Microscopy Dr. Angela Chen (as a graduate student)