Description :
A doctor persuades a group of boys to be vaccinated by explaining how it will protect them against disease. Animated sequences depict the body metaphorically as a city, defended by the blood cells, which are stimulated by vaccination to amass arms and ammunition, in order to defend the city when it is invaded by germs. Defense Against Invasion
Defense Against Invasion streaming . Photo : Defense Against Invasion date 1943-08-10
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