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0:00:19 1. Synapse structure 0:08:30 2. Stages of signal transmission in the synapse 0:13:25 3. Life cycle of a mediator 0:16:39 4. Synthesis of a mediator 0:29:18 5. Release of a mediator 1:00:51 6. Initiation of membrane excitation 1:21:37 7. Inactivation of a mediator 1:33:18 8. Agonists and antagonists of mediator receptors