| http://www.w3.org/ns/prov#value | - bits the release of excitatory neurotransmitter from a presynaptic cell? ??? ??? ??? neuromodulation What occurs when a neurotransmitter acts via slow changes in target cell metabolism, or when chemicals other than neurotransmitter modify neuronal activity? ??? ??? ??? neurotransmitters What is one of the ways neurons communicate? ??? ??? ??? neurotransmitters What has several chemical classes? ??
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