| 释义 |
bursectomy, n. Med.|bɜːˈsɛktəmɪ|
[f. bursa n. + -ectomy.]
Excision or destruction of a bird's bursa of Fabricius (the site where B lymphocytes are formed), usu. done in the egg or soon after hatching in research into immunity.
1928Riddle & Tange in Amer. Jrnl. Physiol. LXXXVI. 266 It was thought that observations on these processes in birds deprived of the bursa should supply further light on this problem. As a descriptive term for the process of extirpation of this bursa, we shall introduce and use the word ‘bursectomy’. 1956Poultry Sci. XXXV. 224/1 An experiment designed to study the effect of bursectomy. 1968Nature 19 Oct. 294/1 Bursectomy was achieved either surgically on 1 day old chicks, or hormonally by injecting 6/7 day old incubated eggs with..testosterone propionate. 1974Sci. Amer. Nov. 60 A small portion of chicks subjected to this ‘hormonal bursectomy’..are tolerant of foreign skin.
Hence burˈsectomize v. trans., to subject to bursectomy; burˈsectomized ppl. a.
1928Riddle & Tange in Amer. Jrnl. Physiol. LXXXVI. 271 The size of the ovaries of the bursectomized birds also falls within the normal range of variation of this organ. 1958Poultry Sci. XXXVII. 1091/2 Ten birds were splenectomized at 2 weeks of age and bursectomized one week later. 1969Federation Proc. XXVIII. 432/1, 3 out of 5 chicks bursectomized on the day of hatching failed to make detectable levels of antibody against BSA. 1970Nature 11 Apr. 124/1 In hormonally bursectomized chickens tuberculin sensitivity could not be induced. |