Latent root primordium was not found in shoots in test tubes. The induced root primordium which originated from the division and differentiation of pith ray cell developed into the adventitious roots.

并对四倍体刺槐无性系试管苗不定根的发育过程进行了解剖观察，结果表明试管苗嫩梢无潜伏根原基，不定根由诱生根原基发育形成，诱生根原基源于髓射线细胞的分裂和分化。

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The difference of the cell survival rates between the two cell lines was smaller after neutron irradiation than that after X ray irradiation.

两种细胞快中子照射后的细胞存活较为接近，而X线照射的细胞存活差异较大。

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Purpose: To improve the X-ray diagnostic accuracy of alveolar cell carcinoma.

前言：目的：提高肺泡癌的X线诊断与鉴别诊断能力。

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Broad has also given millions to help fund embryonic stem cell research, as have fellow billionaires Ray Dolby, founder of audio technology maker Dolby Labs, and New York mayor Michael Bloomberg.

FORBES: Magazine Article

Broad has also given millions to help fund embryonic stem cell research, as have fellow billionaires Ray Dolby, founder of audio technology maker Dolby Labs (nyse: DLB - news - people ), and New York mayor Michael Bloomberg.

FORBES: Billionaire Science Projects