Mystery #2Tier 2cells / healing
Why do cuts heal?
Scrape your knee and within a week or two the wound has closed up, often leaving skin as good as new. Your body repaired itself, with no glue and no stitches needed. How does a body mend its own damage?
Your guess
What's your hunch about how your body fixes a cut all by itself?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.