DKK1 was initially identified as an inducer of head formation in Xenopus embryos (7) and plays an important role in the regulation of bone mass (8-10).

DKK1最开始被确定为蟾蜍胚胎头部形成诱导因子[7]。对骨骼质量调节有重要作用[8 - 10]。

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The daily chart of Apple Inc. ( AAPL) appears to be forming a reverse head-and-shoulders bottom formation.

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For instance, the homebuilders completed their major head-and-shoulders top formation in 2006, well before the housing market collapsed.

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The daily chart shows a completed head-and-shoulders top formation, as the neckline (line a) was broken in July.

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