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上海乾思生物科技有限公司
中級(jí)會(huì)員 | 第17年

18916423352

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自產(chǎn)ELISA試劑盒,試劑盒
進(jìn)口ELISA試劑盒
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TUNEL檢測(cè)服務(wù)|實(shí)驗(yàn)技術(shù)服務(wù)

時(shí)間:2015/5/15閱讀:312
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關(guān)鍵詞:TUNEL檢測(cè)服務(wù)|實(shí)驗(yàn)技術(shù)服務(wù)
簡(jiǎn)介:世界*品牌TUNEL檢測(cè)服務(wù)|實(shí)驗(yàn)技術(shù)服務(wù)原裝,質(zhì)量保證,*,。
TUNEL檢測(cè)服務(wù)|實(shí)驗(yàn)技術(shù)服務(wù)——pCzn1質(zhì)粒+Arctic Express宿主菌低溫表達(dá)體系,。
我們具備豐富的蛋白表達(dá)設(shè)計(jì)經(jīng)驗(yàn)及實(shí)驗(yàn)操作技巧,承諾客戶不成功不收費(fèi),。在獲得重組蛋白產(chǎn)品的同時(shí),我們也會(huì)提供相應(yīng)的原始數(shù)據(jù)和原始圖片,不需要再額外花費(fèi)精力重復(fù)實(shí)驗(yàn),。另一方面,,我們所有的實(shí)驗(yàn)數(shù)據(jù)真實(shí)可信,我們提供原始的表達(dá)菌株和克隆質(zhì)粒,,客戶可以依據(jù)我們的實(shí)驗(yàn)報(bào)告重復(fù)我們的實(shí)驗(yàn)結(jié)果,。
產(chǎn)品品牌:   http://www.。,。com/goodsid/fenleiyi/2868603/1.html    
測(cè)序?qū)嶒?yàn)流程:
器材與試劑
1,、器材:光學(xué)顯微鏡及其成像系統(tǒng),、搖床、組化筆,、小型染色缸,、濕盒(塑料飯盒與紗布)、塑料蓋玻片或封口膜,、吸管,、各種規(guī)格的移液器及槍頭等。
2,、試劑:試劑盒含TdT 2×,、Biotinylated標(biāo)記的dUTP、標(biāo)記streptavidin的HRP,、SSC 20×,、Proteinase k、DAB 20×,、DAB底物Buffer 20×,、H2O2 20×;
自備試劑:
(1)1×PBS(pH 7.4,,2.5L=20.0157g 137mM NaCl+0.499552g 2.68mM KCl+0.50013075g 1.47mM KH2PO4+7.253337g 8.1mM Na2HPO4),,115℃×15 min;
(2)0.85%NaCl 500 ml=4.25 g Nacl+500 ml三蒸水,,115 ℃×15 min,;
(3)4%多聚甲醛500 ml=20 g多聚甲醛+500 ml PBS在65 ℃水箱中3 h多,再放入4 ℃保存,。
(4)DNase I buffer:40 mM Tris-HCl (pH 7.9)+10 mM NaCl+6 mM MgCl2+10 mM CaCl2,;
(5)Proteinase K buffer:100 mM Tris-HCl (pH 8.0)+50 mM EDTA;
(6)DNase 1(原液1000 U/ml按1:99DNase 1緩沖液稀釋至10 U/ml),;
(7)DAB工作液(臨用前配制,,5ul 20×DAB+1ul 30%H2O2+94 ul PBS)
(8)20 μg/ml Proteinase K工作液(按1:500稀釋貯存液1 mg/ml)。
(9)另外,,雙蒸水,、無(wú)菌0.85%NaCl、二甲苯,、梯度乙醇(100,、95、85,、70,、50%)、蘇木素,。
實(shí)驗(yàn)步驟
1,、脫蠟:用二甲苯浸洗5 min×2次,;
2、水化:用梯度乙醇(100%×5 min,、100%×3 min,、95%×3 min、85%×3 min,、70%×3 min,、50%×3 min);
3,、浸洗:0.85%NaCl×5 min?PBS洗5 min,;
4、固定:浸入4%多聚甲醛15 min,;
5,、浸洗:PBS 5 min×2次;
6,、細(xì)胞通透:用每片100 ul 20 μg/ml Proteinase K處理組織15(10~30) min RT,;
7、浸洗:PBS洗5 min,;
8,、固定: 浸入4%多聚甲醛5 min;
9,、浸洗:PBS 5 min×2次,;
10、平衡:加100 ul平衡液,,濕盒平衡10(5~10) min,;
11、制備TUNEL反應(yīng)混合液:處理組用1ul rTdT+1ul 生物素標(biāo)記的dUTP+98 ul平衡液混勻,;而陰性對(duì)照組不加rTdT,,改為三蒸水;陽(yáng)性對(duì)照組先加入100ul DNase 1 緩沖液孵育5 min,,甩掉液體后再加100 ul DNase 1(10 U/ml)酶切10 min,,用去離子水沖洗4次,PBS浸洗5 min,,后面步驟從第10步開始,。
12、標(biāo)記反應(yīng):加100ul TUNEL反應(yīng)混合液于標(biāo)本上,,加蓋玻片或封口膜在暗濕盒中反應(yīng)37 ℃×1 h。
13,、終止反應(yīng):浸入2×SSC 15 min,;
14,、浸洗:PBS 5 min×3次;
15,、封閉POD:浸入0.3%H2O2 15 min,;
16、浸洗:PBS 5 min×3次,;
17,、酶標(biāo)反應(yīng):加100 ul streptavidin標(biāo)記HRP(按1:500 PBS稀釋)30 min;
18,、浸洗:PBS 5 min×3次,;
19、DAB顯色(避光):加100 ulDAB混合液(50 ulDAB+50 ulDAB底物緩沖液+50 ul H2O220×+950 ul三蒸水)10 min左右,,鏡下出現(xiàn)淺棕色背景時(shí),。
20、用去離子水沖洗幾次,;
21,、用蘇木素復(fù)染,3 s左右后立即用自來(lái)水沖洗,。梯度酒精脫水(50,、70、85,、95,、100、100%各1 min),、二甲苯透明1 min×2次,、中性樹膠封片。
22,、加一滴PBS或甘油在視野下,,用光學(xué)顯微鏡觀察凋亡細(xì)胞(共計(jì)200~500個(gè)細(xì)胞)并拍照??山Y(jié)合凋亡細(xì)胞形態(tài)特征來(lái)綜合判斷(未染色細(xì)胞變小,,胞膜完整但出現(xiàn)發(fā)泡現(xiàn)象,晚期出現(xiàn)凋亡小體,,貼壁細(xì)胞出現(xiàn)鄒縮,、變圓、脫落,;而染色細(xì)胞呈現(xiàn)染色質(zhì)濃縮,、邊緣化,核膜裂解,染色質(zhì)分割成塊狀/凋亡小體),。

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