Direct Agonist
An agonist is a chemical that activates a receptor to produce a biological response. Receptors are cellular proteins whose activation causes the cell to modify what it is currently doing. In contrast, an antagonist blocks the action of the agonist, while an inverse agonist causes an action opposite to that of the agonist. Etymology From the Greek αγωνιστής (agōnistēs), contestant; champion; rival < αγων (agōn), contest, combat; exertion, struggle < αγω (agō), I lead, lead towards, conduct; drive

Types of agonists

can be activated by either agonists (su ...
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Fictional Character
In fiction, a character (or speaker, in poetry) is a person or other being in a narrative (such as a novel, play, radio or television series, music, film, or video game). The character may be entirely fictional or based on a real-life person, in which case the distinction of a "fictional" versus "real" character may be made. Derived from the Ancient Greek word , the English word dates from the Restoration, although it became widely used after its appearance in '' Tom Jones'' by Henry Fielding in 1749. From this, the sense of "a part played by an actor" developed.Harrison (1998, 51-2) quotation: (Before this development, the term ''dramatis personae'', naturalized in English from Latin and meaning "masks of the drama," encapsulated the notion of characters from the literal aspect of masks.) Character, particularly when enacted by an actor in the theatre or cinema, involves "the illusion of being a human person". In literature, characters guide readers through their stories, hel ...
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