| 单词 | alpha cell |
| 释义 | > as lemmasalpha cell alpha cell n. Physiology a cell of a specific type in a tissue consisting of two or more cell types, esp. one with acidophil staining properties; spec. (a) an acidophil of the anterior lobe of the pituitary; (b) a glucagon-secreting cell of an islet of Langerhans in the pancreas. ΚΠ 1895 Med. News 9 Feb. 159/1 Another peculiarity quite characteristic of the kind of blood in question [sc. diabetic blood] is a very clear, sharply-defined, narrow, white zone surrounding the nuclei of the white-blood corpuscle (leukocytes and lymphocytes and alpha-cells). 1925 P. Bailey & L. M. Davidoff in Amer. Jrnl. Pathol. 1 186 It is preferable to speak of the granules as α and β granules, the α being easily understood to mean the acidophilic and the β to refer to the so-called basophilic (cyanophilic) granules. The cells which contain these granules may then be spoken of as α or β cells, for cells containing both types are not known to exist under normal conditions. 1959 W. Andrews Textbk. Compar. Histol. xiii. 519 The anterior lobe consists of epithelial cells... First, there are the acidophils or alpha cells which contain eosin-staining granules. 1979 Chem. Week 25 Apr. 53 The islets contain alpha, beta and delta cells, which produce glucagon, insulin and somatotropin, respectively. 2006 Proc. National Acad. Sci. U.S.A. 103 8470/1 The alpha cells are identified on the islet periphery by immunohistochemical staining with a fluorescent antibody against glucagon. < as lemmas |
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