Answer:
An antigen is any substance that causes your immune system to produce antibodies against it. This means your immune system does not recognize the substance, and is trying to fight it off. An antigen may be a substance from the environment, such as chemicals, bacteria, viruses, or pollen.
Explanation:
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Answer:
1. true
2. trur
Explanation:
The glans penis is the slightly larger area towards the end of the penis and contains the opening of the urethra. The urethra. This is the tube which passes from the bladder down the penis to the outside. It carries both urine and semen.
Answer:
The answer will be A. germinal stage
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