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Welcome to Tech News briefing. It It's Friday, October 18th.

I'm Zoe Thomas for the Wall Street Journal.

Researchers are working to grow heart valves, lungs,

and more from human cells.

We'll tell you about the tech one company has developed

and how it could make a difference to patients.

And then, Apple's Mixed Reality headset,

The Vision Pro, is struggling to attract major software makers to develop apps for the device.

Our reporter Aaron Tilly will be here to explain why Appmakers aren't jumping into this new ecosystem, what that means for device

sales.

But first, lab-grown blood vessels could offer doctors a drastically different way to treat traumatic injuries and circulation problems.

This lab-grown tissue is more likely to be accepted by the body than synthetic grafts made of plastic, and more

accessible if a surgeon doesn't have time to harvest a blood vessel from a different part of the

patient's body.

Here to tell us more is our reporter Liz

Leslie White. Liz researchers have brought some body tissue to market such as

knee cartilage and skin grafts but what's holding up the more complicated anatomy?

So there are all kinds of challenges to doing this.

...