Researchers produced elastic ear cartilage in a laboratory using human ear cartilage cells. The project is a collaboration between university and hospital teams, and it builds on earlier 3D printing work.
The scientists grew many cells in a nutrient solution, then mixed them into a bioink and printed ear shapes. They used a special culture environment and an incubator so collagen and elastin could form in the material.
In animal tests the printed ears kept their shape and elasticity after six weeks. The team now plans clinical studies and formal approval before use in people.
Difficult words
- cartilage — firm but flexible tissue in the body
- bioink — material with cells used for 3D printing
- incubator — warm, controlled box for growing cells
- collagen — protein that helps tissue stay strong
- elastin — protein that gives tissue stretch and return
- clinical — relating to tests or treatments with patients
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Do you think clinical studies are important before use in people? Why?
- Would you feel comfortable with a 3D-printed ear made from human cells? Why or why not?
- What is one advantage of printing ear shapes in a lab?
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