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Transmitters
Chemical agents released by neurons that cross synapses to carry signals to other neurons or muscles.
Transporter Proteins
Proteins that move molecules across cell membranes, playing critical roles in nutrient uptake, neurotransmitter clearance, and waste removal.
Presynaptic Axon
The part of an axon that is situated at the presynaptic side of a synapse, responsible for releasing neurotransmitters.
Neurotransmitter
A chemical substance that transmits signals across a synapse from one neuron to another in the brain and nervous system.
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