Binds to the same receptor site and is an agent or drug, it becomes another agent but produces an opposite effect. Example drug x binds to receptor site A and potentiates the release of a neurotransmitter, drug X is an agonist at that receptor site.inds to the same receptor site and is an agent or drug, it becomes another agent but produces an opposite effect. Example drug x binds to receptor site A and potentiates the release of a neurotransmitter, drug X is an agonist at that receptor site.
Athens, one of the worldâs oldest cities, has a history of over 3000 years. Details of its founding, though, are not known; the rich mythology of ancient Greeks, though, fills in the blanks. According to the legend, Cecrops was the founder and first King of Athens.
Market scene, from The Greeks documentary. When Pisistratus became tyrant of Athens in 547 BC it marked a change of direction for the city-state and the surrounding land of Attica, which despite its large size and power was overshadowed by many of the other city-states of Greece. During the long period of his rule, Pisistratus sought to correct this.