| 单词 | embryonic stem cell |
| 释义 | > as lemmasembryonic stem cell embryonic stem cell n. (a) either of the two cells formed by the first division of the zygote (disused); (b) a stem cell derived from an embryo, esp. when totipotent or pluripotent. ΚΠ 1905 J. McCabe tr. E. Haeckel Evol. Man I. vii. 134 The product of this blending..is the stem-nucleus, or the first segmentation nucleus (archicaryon)—that is to say, the nucleus of the new-born embryonic stem-cell [Ger. Kern der neugebildeten kindlichen Stammzelle] or ‘first segmentation cell’. 1979 R. Konigsberg in W. B. Jakoby & I. H. Pastan Cell Culture xliv. 511 Cell culture systems have been employed for the past 17 years to study the differentiation of skeletal muscle fibers from myoblasts, the embryonic stem cells from which this tissue develops in vivo. 1981 Internat. Rev. Cytol. 69 293 The use of the term undifferentiated cell in the definition of a stem cell is confusing since stem cells may, in fact, be differentiated relative to embryonic stem cells. 2001 N.Y. Times 20 Jan. a17/2 Because embryonic stem cells can proliferate indefinitely and grow into many types of cells, medical experts see them as the building blocks of ‘regenerative medicine’. 2010 Independent 25 Aug. 17/5 These induced pluripotent stem (iPS) cells have been shown in mice to be just as good as embryonic stem cells. < as lemmas |
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