Breyanna's defense barrier
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your body defenses are like a castle. Castle haves soldiers to protect the castle which is why a castle had a series of defense.
Defective genetic traits can be past from parents to offspring.
what can possibly going on with me ?
The immune system's job is to protect your body and your body haves many ways to protect pathogens.
u can read the board if u like.
the first line of defense includes both physical and chemical barriers
also includes the skin and other barriers that keep pathogens of your body
final thing yu should learn is that most fluids release from your body that contain chemicals that kill pathogens
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