致癌質粒 的英文怎麼說
中文拼音 [zhìáizhílì]
致癌質粒
英文
inducing tumor plasmid-
Bioassays on the skin, subcutaneous tissue, cervix, and trachea of experimental animals have shown that particulate matter of urban air can be carcinogenic in the intact animal.
對實驗動物的皮膚、皮下組織、頸和氣管的生物鑒定表明，城市空氣中的顆粒物質對健康動物可能是致癌的。The airborne carcinogens are in the atmosphere as absorbed matter on soot particles.
空氣傳播的致癌物在大氣中是煙炱粒子上吸附的物質。Recent research also doubt that those are one of the carcinogenic substances. furthermore, the granular pollutants are also the main source in atmosphere suspensible particles. they cause damages to environments, landscapes, and buildings, and the pungent smell produced by them also makes people feel uncomfortable
最近的研究亦懷疑其乃致癌物質之一，此外粒狀污染亦是大氣中懸浮微粒之主要來源，對環境、景觀、建築物造成破壞，其刺鼻的氣味也令人呼吸不舒服。In our laboratory, a unique mutation detection system using a shuttle vector plasmid has been established to demonstrate that a low concentration of mnng ( 0. 2 m ) can induce nontargeted mutation in mammalian cells : the mammalian cells were exposed to 0. 2m mnng for 2. 5h, then a shuttle plasmid pz189 carrying supf trna gene was transfected into cells after 24h culture. we found a 5 - fold higher mutation frequency of the plasmid replicated in pretreated cells than the spontaneous mutation frequency of the plasmid replicated in control cells. this kind of mutation did not occur immediately after mnng exposure
我們實驗室曾用一特殊的突變檢測系統，直接證明dna損傷劑可在哺乳動物細胞誘發非定標性突變：首先用低濃度（ 0 . 2 m ）的短壽烷化劑mnng （半壽期為1 . 1hr ）處理細胞2 . 5h后，繼續培養24h ，將重組有用作突變檢測的靶基因supftrna基因的穿梭質粒pz189轉入細胞復制，發現在未受致癌物直接攻擊的穿梭質粒中有較自發突變率高5倍以上的靶基因突變。分享友人