【美国 Colossal Biosciences用3D打印的人造蛋壳培育小鸡】
一家生物科技公司声称，他们已经研发出一种“完全人造”的鸡蛋，这是迈向人造子宫的早期一步。

人造蛋壳，而非人造鸡蛋：巨型生物科技公司在3D打印的塑料容器中培育出了小鸡，这些容器表面涂有一层硅基薄膜，可以模拟蛋壳的氧气交换——这是一项意义重大的进展，但科学家们认为该公司夸大了这项技术的价值。

恐鸟是其目标之一：巨型生物科技公司的目标是复活巨型恐鸟，这种体长12英尺（约3.7米）的不会飞的鸟类已被猎杀至灭绝——这需要对数千个DNA碱基进行基因重写，并将人造蛋放大到沙拉甩干器大小。

科学家们对此表示怀疑：研究人员自 1998 年以来一直在人工容器中培育鸟类，他们表示 Colossal 公司声称取得了史无前例的突破，这种说法过于夸大——对于这家公司来说，这是一种熟悉的模式，该公司去年也因其“恐狼”复活的说法而遭到广泛拒绝。
No Shells, No Problem!

Colossal Biosciences is growing chickens in a 3D-printed artificial eggshell

In an early step towards artificial wombs, a biotech company claims it’s developed a “fully artificial” chicken egg.

Artificial eggshell, not artificial egg: Colossal Biosciences has grown baby chicks inside 3D-printed plastic containers coated with a silicone-based membrane that mimics an eggshell's oxygen exchange — a meaningful step, but scientists say the company is overselling it.

The moa is one target: Colossal's goal is resurrecting the giant moa, a 12-foot flightless bird hunted to extinction — which would require genetically rewriting thousands of DNA letters and scaling up the artificial eggs to the size of a salad spinner.

Scientists are skeptical: Researchers have been growing birds in artificial containers since 1998 and say Colossal's claims of a first-ever breakthrough are overblown — a familiar pattern for a company that last year also faced widespread rejection of its "dire wolf" resurrection claim. http://t.cn/AX62kv4d