| 单词 |
Langerhans |
| 释义 |
Langerhans Histology.|ˈlæŋəhænz|
The name of Paul Langerhans (1847–88), German anatomist, used attrib., in the possessive, and with of-adjunct to designate a kind of dendritic or stellate cell found in the epidermis and characterized by the presence of cytoplasmic granules (Langerhans granules). (See also islet of Langerhans s.v. islet 2 b).
1890Billings Med. Dict. II. 32/1 Langerhans' cells, stellate cells found in deeper layers of epidermis, apparently related to nerve terminations. 1934E. V. Cowdry Textbk. Histol. xxix. 449 Cells of the third category are called melanoblasts (Langerhans, stellate or dendritic cells) because they are supposed to form melanin. 1953Phil. Trans. R. Soc. B. CCXXXVII. 162 This technique..led to the erroneous conclusion that the cells of Langerhans occur in the basal layer. Ibid., Langerhans' cells are invariably unpigmented. 1965Jrnl. Investigative Dermatol. XLIV. 202/2 The characteristic granules within the Langerhans cell are shaped like a tennis racket... The number, as well as the size, of the Langerhans granules is..variable. 1965Ibid. XLV. 403/1 The capability of Langerhans cells to synthesize melanin remains to be proven. 1969S. Bradbury Hewer's Textbk. Histol. (ed. 9) xvii. 237 It was at one time thought that the Langerhans cells were effete melanocytes, but they have been shown to be active in the uptake of tritiated thymidine and their E/M appearance suggests also that they are active cells. Their function is still unknown. |
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单词 langern 释义 † langern, v. Obs. rare—1.[? f. languor + -en5.]intr. To languish, lie......