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Serga [27]
3 years ago
9

The portions of an antibody molecule that interact with antigen are known as

Biology
2 answers:
Nuetrik [128]3 years ago
8 0
The active site, or variable region. 
dangina [55]3 years ago
7 0

Answer:

The active site, or variable region.  

Explanation:

The active site, or variable region.  

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