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Dafna11 [192]
3 years ago
15

When foreign material enters the body, one way the immune system responds is by

Biology
2 answers:
kondor19780726 [428]3 years ago
6 0
The Digestive System

: 3
Schach [20]3 years ago
3 0
Pathogens may enter you but there is a layer (almost like a wall) that they will have to get through first (in the skin) bacteria can also kill pathogens. The immune system will produce antibodies that will also kill off pathogens.
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