Root hairs are long tubular outgrowths that form on the surface of specialized epidermal cells. Their development occurs in three phases: cell fate specification, initiation and subsequent tip growth.

根毛是由特异表皮细胞形成的管状突起，其发生发育经历三个阶段：细胞命运决定，根毛起始和尖端生长。

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Banque de France Governor Christian Noyer said at the weekend that predictions that fiscal tightening would cause European growth to tip over the edge have been proved to be ill-judged and outweighed by the rise of private sector confidence lifting the economy back to a healthy growth rate.

FORBES: No D-S-K In Brussels But Greeks Come Calling Anyway

It would slow down our growth, might tip us into recession, and ironically, would probably increase our deficit.

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But he didn't believe that the growth in manufacturing output would tip the Bank of England's Monetary Policy Committee into pushing for a rise in interest rates when they meet next week.

BBC: Manufacturing growth continues