老司机精品视频,日本免费一区二区三区视频观看,中文在线 | 中文,嫩草伊人久久精品少妇AV网站

DNA電泳試劑 SYBR Green II（10000×）

SYBR ®  Green II RNA gel stain
Cat# ：SY1020
Introduction
SYBR
®  Green II RNA gel stain is one of the most sensitive dyes known for detecting RNA in electrophoreticgels. As little as 100 pg RNA or single-stranded DNA per band can be detected in a SYBR Green IIBstained agarose or polyacrylamide gel using 254 nm epi-illumination Polaroid
®  667, black-and-white print film and a SYBR Green gel stain photographic filter.
Even with 300 nm transillumination, as little as 500 pg RNA per band can be detected. SYBR Green II RNA gel stain is significantly more sensitive than ethidium bromide,the most commonly used stain for detecting nucleic acids in gels (Figure 1). With 300 nmtransilluminationand photography through an orange-red gelatin filter, ethidium bromide’s sensitivity limit in a standardagarose minigel is about 1.5 ng single-stranded nucleic acid per band. Note that our detection limits arebased on results obtained with a FotoDyne
®  Foto/UV ®  450 ultraviolet transilluminator in combination with
Polaroid 667 film. Video cameras and CCD cameras in general have a different spectral response thanblack-and-white print film and thus may not exhibit the same sensitivity.
A BFigure 1. Dilution series of Escherichia coli ribosomal 16S and 23S RNA electrophoresed in 1% agarose gels. The gelscontain an identical twofold dilution series of RNA. The gel shown in panel A was stained for 20 minutes with SYBR Green II
RNA gel stain (using a 1:10,000 dilution of the stock reagent) and not destained. The gel shown in panel B was stained for 20minutes with 5 µg/mL ethidium bromide, then destained for an additional 20 minutes. The SYBR Green II dye-stained gel was excited using 254 nm epi-illumination and the ethidium bromide–stained gel using 300 nm transillumination (Fotodyne
®  FotoUV 450 ultraviolet transilluminator). Although the SYBR Green II dye-stained gel can be excited at 300 nm, epi-illumination at 254 nm resulted in the best sensitivity in our hands. Both gels were photographed with Polaroid 667 black-and-white print film,using a SYBR Green gel stain photographic filter (SYBR Green II dye-stained gel) or an ethidium bromide gel stainphotographic filter (ethidium bromide– stained gel).
SYBR Green II RNA gel stain can be used to:
 Analyze small aliquots from RNA preparations before Northern blotting, start-site mapping or cDNApreparation
 Visualize the migration behavior of 5S rRNA species after high-resolution denaturing gradienectrophoresis (DGGE)
Stain DNA in single-strand conformation polymorphism (SSCP)
Stain DNA before amplification by PCR
Materials Contents SYBR Green II stain is provided as a 10,000X concentrate in DMSO in the following sizes:
 50 µL (SY1040-50)
 500 µL (SY1040-500)
Storage
Upon receipt, store the dye frozen at -20°C, protected from light in a desiccator. When stored properly,the SYBR Green II stain stock solution in DMSO is stable for six months to one year.

注：SYBR Green II主要用于RNA和單鏈DNA電泳。是EB和替代品，無致癌性，超敏感性。用作常規(guī)電泳時，須將商品化的核酸MARKER作一定倍數(shù)的稀釋（1/5-1/10），這樣才能得到比較理想的結果。

DNA電泳試劑 SYBR Green II（10000×）訂購說明：
1、絕大部分產(chǎn)品備有現(xiàn)貨，一般情況下都能訂貨當日發(fā)貨。 
2、部分非常用產(chǎn)品，需提前1－2日預訂，海外期貨則需要提前3-6周預訂。 
3、部分產(chǎn)品價格會因貨期、批次等因素發(fā)生變化，若有變動以訂貨當日新價格為準。 
4、每日訂單截止時間為16點整，部分城市可到17點整，因超過截止時間造成當日不能發(fā)貨的將于次日安排發(fā)貨。
5、請辦理完貨款后，將收據(jù)、底單等連同收貨人的地址、姓名、等以傳真、、短信、等形式通知我們。

DNA電泳試劑 SYBR Green II（10000×）運輸說明：
1、極低溫產(chǎn)品：極低溫產(chǎn)品運輸過程中加裝干冰運輸。用干冰把產(chǎn)品包裹起來，再用泡沫盒密封，膠帶層層粘住泡沫盒，放入索萊寶的箱子，然后交付給合作快遞，安全快速高效放心的送客戶的手中，保證產(chǎn)品的性質(zhì)穩(wěn)定如一，為您的實驗保駕護航。
2、低溫產(chǎn)品：低溫產(chǎn)品運輸過程中加裝索萊寶冰袋運輸。事先用冰袋把產(chǎn)品包裹起來，再使用泡沫盒密封，用膠帶嚴實密封泡沫盒，再放入索萊寶的箱子（保溫效果少可以持續(xù)一周），然后交付給合作快遞，安全快速高效放心的送客戶的手中，保證產(chǎn)品的性質(zhì)穩(wěn)定如一，為您的實驗保駕護航。
3、常溫產(chǎn)品：常溫產(chǎn)品運輸過程中無需加冰或者特殊包裝。產(chǎn)品由公司庫房人員快速配貨，準確快速高效的快遞保證產(chǎn)品快速送達您的手中。