Counter-terrorism Intelligence is often the first line of defense against terrorism in the US and other nations.
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The bodies first defence against a virus is your skin. The body first defense against a virus is Mucus. Mucus
skin is the first defense.
Lysozymes
to be clean
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The first line of defense includes the skin, breathing passage, mouth and stomach.
You can perform self defense against someone on their property as long as they attacked you first and you are in danger.
The body's first line of defense against infection is the skin.
It is the first line of defense against pathogens.
The first line of defense against a pathogen would be barriers. Ex. The skin, Breathing Passages, and The Mouth and stomach.
Your skin is the first line of defense.