Examlex
The premise that a T cell must receive two specific simultaneous signals to be activated, one from its compatible antigen and a stimulatory cosignal molecule on the surface of an APC is called clonal ___________.
Cold War
A period of geopolitical tension and ideological conflicts between the United States and the Soviet Union, from the late 1940s to the early 1990s.
Soviet Union
A former federal socialist state in northern Eurasia that existed from 1922 to 1991, officially known as the Union of Soviet Socialist Republics (USSR).
Communist-Allied
Being aligned or associated with Communist ideologies or entities, often in a geopolitical sense referring to nations or groups.
Ideological Confrontation
A conflict or clash between differing belief systems, values, or ideologies.
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