Yeast is a magical substance, one that we have to thank for beer and bread, two essential foodstuffs. But they have nothing on the new discovery that yeast can also be used to create synthetic corneas.
Scientists have plugged human DNA into genetically-engineered yeast. The result was human protein that can be placed into molds to create artificial corneas that can be surgically attached to human eyes.
It's a great step forward, one that could potentially help people see who couldn't before. It takes a pretty big advancement to say it might be better than beer, but this fits the bill.
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