...CR基因重排减少导致对抗原刺激的反应减弱或无反应，这与移植后机会性让感染有关，TCR切除环(T cell receptor excision circles，TRECs)是编码TCR的基因片段过程中产生的一种游离DNA环。
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T细胞受体切除环 T cell receptor excision circles
全切除环舌骨固定术 cricohyoidopexy ; CHP
膜环形切除术 procedure for prolapse and hemorrhoids ; PPH ; procedureforprolapsandhemorrhoids
膜环形切除钉合术 procedure for prolapse and haemorrhoids ; PPH
环钻切除 punch excision
环状切除术 procedure for prolapse and hemorrhoids ; PPH
环形切除术 procedure for prolapse and haemorrhoids ; PPH
只需要多几次这类切除，就能达到带有单一环状线粒体祖先全部功能性基因的18条微型染色体。
It would take just a few more excision events to arrive at 18 mini chromosomes with all the functionality of their single-circle ancestor.
目的：观察局部应用氨甲环酸及阿米卡星预防扁桃体切除术后出血的效果。
AIM: to observe the effect of topical application of tranexamic acid and amikacin in preventing hemorrhage after tonsillectomy.
翻修椎间盘切除(进一步切除残余的纤维环)，去除骨赘，腰椎结构性植骨植入准备好的椎间隙内(图5)。
After revision of the discectomy and removal of the osteophytes, a lumbar structural allograft was placed into the prepared disc space (see Fig. 5).
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