Writers have also created more complex situations. In some instances, a story is told from the villain's point of view, and any hero trying to stop the villain can be regarded as an antagonist. Such antagonists are usually police officers or other law enforcement officials. In the film K-19: The Widowmaker, an American film about a Soviet Cold War submarine crew, the crew, enemies of the United States, are depicted as protagonists, creating something of a paradox -as very often the American film industry tends to depict the forces of the United States as the people that fight for "good" and "justice", in opposition to Russia (especially the former Soviet Union) being the antagonists who often have maniacal and/or malicious intentions (e.g. world domination). Sometimes, antagonists and protagonists may overlap, depending on what their ultimate objectives are considered to be.
Antagonist affinity measurements at the Gi-coupled human histamine H3 receptor expressed in CHO cells.(Research article)
Jun 06, 2008; Authors: Jillian G Baker (corresponding author)  Background antagonist affinity measurements have always played a key...