Serotonin, also known as 5-hydroxytryptamine, is an important neurotransmitter in the CNS and has many important functions outside the CNS. Serotoninergic neuron cell bodies in the CNS are found in the raphe nucleus and send their fine beaded processes throughout the brain and spinal cord. The serotoninergic system modulates mood, perception, emotion, aggression, stress responses, sleep and appetite and contributes to learning and memory formation. The processes of serotoninergic neurons express the Na+/Cl- dependent serotonin transporter (SERT), which is responsible for uptake of serotonin from the extracellular space following synaptic release.
RA22153 was made against a peptide identical to the C-terminal 21 amino acids of human SERT and can be used to visualize serotoninergic neurons and their processes in cell culture and in sectioned material. The homologous rodent peptide differs by one conservative amino acid substitution and we have shown that this antibody works well on rodent and bovine tissues and, based on sequence conservation, is expected to be widely applicable to other mammals.
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