determining gene 中文意思是什麼
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The unexpected sequence change in ts - 41, - 42 and, as - 41, - 42 may have occurred after divergence of amniotes. it is the first report that the sequence homologues of the progenitor of the mammalian testis - determining gene sry were identified in reptile. these findings might provide molecular evidences that sry - related genes may be involved into tsd
進一步序列分析表明： as41 42 、 ts41 42與非爬行類脊椎動物的sox - 1 、 - 2 、 - 3的氨基酸同源性低於非爬行類脊椎動物包括哺乳類、鳥類、兩棲類和魚類的腸工一1 、一2 、一3相互之間的氨基酸同源性， 。 -
Pcr fragments of 668bp, containing the quinolone resistance - determining region of the gyra gene got from the whole strains in the cherosome, and the one in the plasmid which were the first found in the salmonella typhimurium that reported in p. r. china
結果表明， 16株致病性沙門氏菌對12種常用抗菌素的耐藥率在31 . 3 - 93 . 8之間，並已經出現了氟喹諾酮類耐藥菌株。 -
The quinolone resistance - determining region ( qrdr ) of gyra gene of 19 resistance isolates was amplified by pcr, sequenced and their amino acid mutations were analyzed. the results revealed that 9 isolates contained a mutation in gyra of a serine at position 83 ( ser83 ) to a phenylalanine, and 1 isolate exhibited a mutation of ser83 to a tyrosine, and 6 isolates that were resistant to more than six kinds of fluoroquinolones showed a mutation asp87 to asparagine at the same time
採用pcr技術擴增了對喹諾酮類藥物耐藥的19株禽源沙門氏菌分離菌株gyra基因qrdr ，經純化、測序和序列分析表明， 19株耐藥菌株中有10株第83位氨基酸發生了變異，其中有9株由絲氨酸（ s ）變異為苯丙氨酸（ f ） ， 1株由絲氨酸變異為酪氨酸（ y ） 。
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