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黄赤

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Cell  viability  was determined  by the MTT assay.
Briefly, cells were plated in 96-well flat-bottomed plates at 5   ×   10 3 cells per well and allowed to grow overnight prior to exposure to MCNs, DOX, or DOX@MCNs with different concentrations, followed by irradiation with red light. After 24 or 48 h of further incubation, the MTT reagent (3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyltetra-zolium bromide) was added for 4 h at 37  °  C to allow conversion of MTT to a purple formazan product by active mitochondria. Then the formazan product  was dissolv ed in DMSO and quantifi  ed  by absorption spectrophotometry at 490 nm on an enzyme-labeled instrument  (SUNOSTIK  SPR-960).
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黄赤: 金币+5, 翻译EPI+1, ★★★★★最佳答案, 谢谢 2013-04-03 09:04:37
利用MTT 法测定细胞活性
首先,细胞被接种到96孔平底板,细胞浓度调整到5 ×103个/孔,培养过夜,然后添加不同浓度的MCNs或DOX, 或者同时添加DOX和MCNs ,最后用红光照射。在培养箱中培养24h或者48h后,添加MTT至96孔板,每孔10-20ul,然后放置于37℃二氧化碳培养箱中4h,让MTT在活细胞中的活性线粒体作用下充分形成蓝紫色的甲瓒结晶。最后,每孔添加150ulDMSO,将蓝紫色结晶溶解,利用吸光光度法,用酶标仪在490nm波长下测定其OD值(吸光度值)。

正好我最近在做MTT法,英文里面有些没交代清楚,我已经在翻译里给加上了。希望能帮到你!
物来顺应,未来不迎,当时不杂,既过不恋。
2楼2013-04-02 22:50:20
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