📖+10 XP
🎧+10 XP
✅+15 XP
Level A1 – BeginnerCEFR A1
2 min
71 words
- Scientists study cells in tissues.
- They study why fibrosis can start suddenly.
- Fibrosis is too much scarring in organs.
- Groups of cells can switch from healthy to sick fast.
- A mechanical tipping point makes the switch happen.
- The switch depends on how far cells are apart.
- Collagen fibers help send force signals between cells.
- More collagen crosslinking makes cells activate and stiffen tissue.
- This change is like water freezing to ice.
Difficult words
- fibrosis — a disease with too much scar tissue in organs
- scarring — thick tissue that forms after an injury
- tissue — a group of cells in a body parttissues
- collagen — a protein that makes body tissue strong
- activate — to make cells start working or change
- stiffen — to become harder or less flexible
- tipping point — the moment when a small change causes a big switch
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Do you have a scar?
- Have you learned about cells at school?
- Do you know when water freezes to ice?
Related articles
18 Dec 2025
Gut has a backup system for IgA antibodies
Researchers found two different routes that make IgA antibodies in the gut. Early IgA often comes from non‑germinal center cells but later from germinal centers; both types showed similar specificity and mutations, which may help vaccine design.
20 Dec 2025
Hot, humid pregnancy harms child growth more than heat alone
New research in Science Advances shows that hot, humid conditions during pregnancy damage child growth far more than high temperature by itself. The study used a combined metric (WBGT) in South Asia and found much larger prenatal risks when humidity is included.
5 Dec 2024
12 Jul 2024
26 Dec 2025