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A molecule that stimulates an immune system reaction by B cells and T cells is termed a(an) :
Soviet Invasion
Refers typically to instances where the Soviet Union forcefully entered a nation, such as the 1968 invasion of Czechoslovakia to suppress the Prague Spring reforms.
Czechoslovakia
A former country in Central Europe that existed from 1918 to 1992, before peacefully splitting into the Czech Republic and Slovakia.
American Planes
Refers to aircraft manufactured in the United States, often highlighting their role in military and civilian aviation history.
World War II
A global military conflict that took place from 1939 to 1945, involving most of the world's nations, including all of the great powers, eventually forming two opposing military alliances: the Allies and the Axis.
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