DNA（calf thymus）
貨號(hào)：D8020
規(guī)格：50mg/支

• 英文名稱：Deoxyribonucleic acid sodium salt from calf thymus（DNA(calf thymus)）

• 別名：ctDNA;胸腺核酸鈉鹽;脫氧核糖核酸鈉鹽（來(lái)源于小牛胸腺）

• CAS：73049-39-5

• 儲(chǔ)存條件：2-8°C

• 外觀（性狀）：纖維狀的

• 單位：支

    小牛胸腺DNA(CT-DNA)是一種天然的DNA廣泛用于研究DNA綁定抗癌劑和DNA綁定代理,調(diào)節(jié)DNA結(jié)構(gòu)和功能。

    小牛胸腺DNA的DNA也被運(yùn)用于物理化學(xué)研究行為的解決方案。 溶解性：溶于水，參考濃度1mg/ml，4℃條件下輕輕搖晃為佳方法，但不可劇烈震蕩。

Preparation Note
This product is extracted using a method that causes shearing yielding a highly polymerized mixture of double and single stranded DNA . However, double stranded DNA is the predominant form.
This product is prepared from calf thymus tissue of unspecified gender.
Quality
"Highly Polymerized"
Reconstitution
Solutions of DNA have been stored successfully for several months at 4 C, pH 7.5-8, in 10 mM Tris with 1 mM EDTA and without a bacteriostatic agent. At low concentrations (μg/ml) DNA tends to absorb onto the surfaces of plastic tubes. It is not recommended to store DNA in highly alkaline solutions since DNA tends to degrade at alkaline pH greater than 8.0.
This product can be dissolved at 2 mg/ml in water. To reduce further shearing of the DNA, no sonication or stirring should be used. Gentle inversion overnight at 0-4 °C is recommended to compley solubilize the DNA. The presence of 1 mM EDTA is recommended to prevent nucleases from degrading the DNA.
Physical form
fibrous preparation
Application
Calf thymus DNA (CT-DNA) is a natural DNA widely used in studies of DNA binding anticancer agents and DNA binding agents that modulate DNA structure and function. Calf thymus DNA is also used in physicochemical studies of DNA behavior in solution.
Physical properties
λmax 259 nm (100 mM phosphate buffer, pH 7.0).
DNA from calf thymus is 41.9 mole % G-C and 58.1 mole % A-T.1 An OD of 1.0 at 260 nm corresponds to ~ 50 μg of double-stranded DNA.

DNA（calf thymus）訂購(gòu)說(shuō)明：

1、絕大部分產(chǎn)品備有現(xiàn)貨，一般情況下都能訂貨當(dāng)日發(fā)貨。 
2、部分非常用產(chǎn)品，需提前1－2日預(yù)訂，海外期貨則需要提前3-6周預(yù)訂。 
3、部分產(chǎn)品價(jià)格會(huì)因貨期、批次等因素發(fā)生變化，若有變動(dòng)以訂貨當(dāng)日新價(jià)格為準(zhǔn)。 
4、每日訂單截止時(shí)間為16點(diǎn)整，部分城市可到17點(diǎn)整，因超過(guò)截止時(shí)間造成當(dāng)日不能發(fā)貨的將于次日安排發(fā)貨。
5、請(qǐng)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。

運(yùn)輸說(shuō)明：

1、極低溫產(chǎn)品：極低溫產(chǎn)品運(yùn)輸過(guò)程中加裝干冰運(yùn)輸。用干冰把產(chǎn)品包裹起來(lái)，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(shí)驗(yàn)保駕護(hù)航。
2、低溫產(chǎn)品：低溫產(chǎn)品運(yùn)輸過(guò)程中加裝索萊寶冰袋運(yùn)輸。事先用冰袋把產(chǎn)品包裹起來(lái)，再使用泡沫盒密封，用膠帶嚴(yán)實(shí)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(shí)驗(yàn)保駕護(hù)航。
3、常溫產(chǎn)品：常溫產(chǎn)品運(yùn)輸過(guò)程中無(wú)需加冰或者特殊包裝。產(chǎn)品由公司庫(kù)房人員快速配貨，準(zhǔn)確快速高效的快遞保證產(chǎn)品快速送達(dá)您的手中。