Rising organs, and Fb’s rubbish content material

Within the coming weeks, a volunteer in Boston, Massachusetts, would be the first to trial a brand new remedy that would finally end up making a 2nd liver of their frame. And that’s just the start—within the months that observe, different volunteers will take a look at doses that would go away them with as much as six livers of their our bodies.

The corporate at the back of the remedy, LyGenesis, hopes to save lots of other folks with devastating liver illnesses who don’t seem to be eligible for transplants. Their way is to inject liver cells from a donor into the lymph nodes of unwell recipients, which can provide upward thrust to completely new miniature organs. Those mini livers must assist atone for an present diseased one. The way seems to paintings in mice, pigs, and canines. Now we’ll to find out if it really works in other folks. Learn the whole tale.

—Jessica Hamzelou

The preferred content material on Fb belongs within the rubbish

Essentially the most seen submit on Fb closing quarter was once a 69 funny story, that includes reposted photos from an episode of the TV display Circle of relatives Feud. The submit, firstly an Instagram Reel, had greater than 52 million perspectives on Fb, in step with Meta’s quarterly file at the most generally seen content material at the platform in america. It was once simply one of the spammy meme reposts to characteristic in Meta’s personal record of its most sensible content material at the platform.

This quarterly file, first introduced a 12 months in the past, was once created partly in order that Meta may just inform the tale it sought after to inform about Fb: that its customers don’t seem to be bombarded continuously with excessive political content material. However in attempting to take action, it has demonstrated one thing else: the preferred content material on Fb is frequently terrible, recycled generic memes. Learn the whole tale.

—Abby Ohlheiser

Scientists have created artificial mouse embryos with evolved brains

The scoop: Mouse embryos lately generated from stem cells in a lab display extra mind construction than any artificial mouse embryos created up to now. Whilst others had created mouse embryos from stem cells, none had reached the purpose the place all of the mind, together with the anterior portion on the entrance, started to broaden, in step with the researchers.

How they did it: The brand new type embryos, which bypass the will for sperm or egg cells, have been evolved within the lab along herbal mouse embryos. They reflected the similar phases of construction as much as 8 and a part days after fertilization, growing beating hearts and different foundations of organs.

Why it issues: The findings may just assist scientists be informed extra about how human embryos broaden and supply insights into illnesses, in addition to offering a substitute for animals for checking out. Finding out how mouse stem cells engage at this level in construction may just additionally supply treasured perception into why human pregnancies fail throughout the earliest phases, and how you can save you that from going down. Learn the whole tale.

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