front 1 Acetylcholine (ACh) | back 1
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front 2 GABA | back 2
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front 3 Glutamate | back 3
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front 4 dopamine | back 4
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front 5 serotonin | back 5
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front 6 norepinephrine (NE) | back 6
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front 7 substance p | back 7
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front 8 histamine | back 8
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front 9 opioid peptides | back 9
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front 10 INHIBITORY | back 10
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front 11 INHIBITORY/EXCITATORY | back 11
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front 12 EXCITATORY (only) | back 12
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