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.
| Tagline | |
| Release Date: | Aug 10, 1943 |
| Genres: | Animation, Documentary |
| Production Company: | Walt Disney Productions |
| Production Countries: | United States of America |
| Casts: | |
| Status: | Released |
| Budget: | $0 |
| Revenue: | 0 |
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