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Word |
# |
Date |
Definition |
Site |
Level |
| vaccine |
1 |
today |
a substance used to protect people and animals from very serious diseases. Vaccines contain germs of a particular disease--these germs been killed or changed in a certain way in a laboratory to make them safe. A vaccine goes into a person's body in a shot that is given by a doctor or nurse. After a vaccine is put into a person's body, that person will not get that disease or will get only a mild case. |
Main |
Int. |