In an experiment that raises bioethical issues, researchers in China have generated a blueprint of a humanized kidney in a pig embryo
Edit: Surprised at all the vegans in this thread. I didn't think there were so many of you. I'm glad you care so much about animal rights, that you're willing to forego eating them and using products made from them.
If you're not vegan and have moral objections for this, maybe you should look at yourself first and all the animal abuse you sanction by eating animals and using animal products.
Did you know dairy cows have to be pregnant to produce milk? They're artificially inseminated throughout most of their lives. I hope everyone complaining about this also complains about ice cream and cheese. Or else they would be hypocrites who just want to blame others but never look at themselves.
So people kill animals for fun, but when someone suggests using animals to save lives it's evil?
Fix things in logical order and hopefully by then we'll have developed other solutions that do not depend on animals. But don't fight against progress when there are so many horrible and useless things that are allowed at the same time, pick your fights efficiently.
Farming pigs in ultra tiny spaces with horrible conditions where some of them die before getting brutally slaughtered to have cheap meat which is not necessary for human nutrition anymore, just tasty - totally fine
Farming pigs and treating them very well so that they grow healthy organs for terminally sick humans to then kill them in a controlled and anesthesized setting - how dare you