| 释义 |
Langhans Histology.|ˈlæŋhænz|
The name of Theodor Langhans (1839–1915), German pathologist, used attrib., in the possessive, and with of-adjunct to designate: (a) (a cell of) an inner layer of large cuboidal cells, one cell thick, that covers chorionic villi and lies beneath the syncytial layer; (b) a distinctive kind of giant cell which has many nuclei, arranged in a ring around the periphery or clustered together at one end of the cell, and is observed esp. in tuberculosis and related granulomatous conditions.
1886Buck's Handbk. Med. Sci. II. 146/2 (heading) Langhans' cellular layer. 1900Dunglison Dict. Med. Sci. (ed. 22) App. 1276/2 Langhans's giant cell, giant-cell of tubercular granulation-tumor. 1906Practitioner Nov. 663 A teratoma is defined as a growth that consists of elements represented in the developing ovum, whether at an early (e.g. syncytia, Langhans' cells, large mono-nuclear cells), or, at a later date (e.g. neuro-epithelial cutaneous, or other elements). 1937E. E. Hewer Textbk. Histol. xxxii. 280 (heading) Layer of Langhans. Ibid., The villi during early pregnancy are covered by an inner layer of cubical cells (Langhans' layer) and an outer syncytial layer. 1939G. G. Kayne et al. Pulmonary Tuberculosis I. iii. 38 Granulomata consisting of epithelioid and Langhans giant cells may be seen as early as the third to sixth day. 1968H. Harris Nucleus & Cytoplasm v. 97 This peripheral distribution of nuclei in certain types of multi⁓nucleate cell was first discussed by Langhans, and when such cells are found in pathological conditions they are commonly referred to as ‘Langhans’ giant cells. 1972Ebe & Kobayashi Fine Struct. Human Cells & Tissues 226 Cytotrophoblasts or Langhans cells of the chorionic villus are thought to be the site of production of a proteinic hormone, chorionic gonadotrophin. |