| 释义 |
caseation|ˈkeɪsiːˈeɪʃən|
[f. L. caseāt-us, treated with cheese: see -ation.]
a. The coagulation of milk, conversion into cheese.
b. Pathol. A type of necrosis characteristic of tuberculosis, in which the infected tissue becomes a firm, amorphous, yellowish-white material resembling cheese in appearance; also, caseated material.
1866A. Flint Princ. Med. (1880) 162 Caseation of the products of lobar pneumonitis. 1876J. S. Bristowe The. & Pract. Med. (ed. 2) 64 A tendency to..that form of degeneration which is termed caseation. 1954E. P. Abraham in H. W. Florey Lect. Gen. Path. viii. 165 Caseation is a form of coagulation necrosis in which the dead tissue looks like cheese and contains a mixture of coagulated protein and fat. 1965Walter & Israel Gen. Path. (ed. 2) xx. 348 There is now produced the tubercle follicle.., which consists of a central mass of caseation surrounded by epithelioid and giant cells. |