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Researchers successfully 3D-printed human-like ears in mice


Key points from article :

Human-like ears have been grown on the backs of mice using 3D printing.

Researchers injected a “bio-ink” made of hydrogel particles and cartilage cells into mice.

Then they shone ear-shaped patterns of near-infrared light onto the ink.

This caused hydrogel particles to stick together, develop layer-by-layer into ear-shaped structures.

After a month, cartilage cells grew around the hydrogel structures.

This resembles ear cartilage structures and team reported no side-effects.

The researchers hope the new technique could be used to construct new ears.

Helpful for people born with microtia, a condition that prevents proper ear development.

Researchers from Sichuan University, published in Science Advances.

Can potentially repair damaged cartilage in other parts of the human body

Mentioned in this article:


Assistant Professor, McGill University


Fellow, Sichuan University


Public Research university.


Scientific Journal


Public research university.