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education diagram healthy structure educational schematic schema illustration isolated colorful health vector scheme drawing labeled people human symbol 5hydroxytryptamine monoamine neurotransmitter biological modulating mood cognition reward learning memory gastrointestinal enterochromaffin cells molecule chemistry molecular atomic icon happiness hormone compound element structural antidepressantChemical Formula Serotonin Medical Science Cartoon Vector
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Chemical formula serotonin medical science #286750963
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