A Wonderleaf question

a real page from the book
Your immune system fights germs with barriers, warning signals, and white blood cells. Skin, mucus, and stomach acid stop many invaders first. If germs get farther, immune cells attack, call for backup, and make antibodies that match a particular germ. Feeling sick often means defenses are active.
A fever can be part of the plan, because some germs struggle when your body is warmer than usual. Later, memory cells may keep a record of that germ, so the next response can start faster. It is messy, tiring work, but carefully coordinated.
Wash hands slowly together, naming the places germs hide: fingertips, nails, thumbs, palms, and between fingers.
Watercolour scenes, straight answers, about three minutes cover to cover.
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