AML1（21q22）基因斷裂探針

 廣州健侖生物科技?有限公司 

本司長期供應(yīng)尼古?。商鎸帲z測試劑盒，其主要品牌包括美國NovaBios、廣州健侖、廣州創(chuàng)侖等進口產(chǎn)品，國產(chǎn)產(chǎn)品，試劑盒的實驗方法是膠體金方法。

我司還有很多熒光原位雜交系列檢測試劑盒以及各種FISH基因探針和染色體探針等，。

AML1（21q22）基因斷裂探針

   本試劑盒主要用于AML1（21q22）基因斷裂的檢測，里面包括即用型雜交液和DAPI復(fù)染劑。
本試劑盒僅供科研使用。

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【公司名稱】 廣州健侖生物科技有限公司
【】    楊永漢 

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【騰訊 】
【公司地址】 廣州清華科技園創(chuàng)新基地番禺石樓鎮(zhèn)創(chuàng)啟路63號二期2幢101-3室

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細胞污染是細胞培養(yǎng)的大敵，預(yù)防和避免污染是細胞培養(yǎng)成功的關(guān)鍵。一旦輕敵就會前功盡棄，不僅浪費時間，而且浪費人力、物力，甚至造成無法彌補的損失。而且小編的童鞋也經(jīng)常向我抱怨：每到畢業(yè)季，就藍瘦，香菇是因為細胞死了一批又一批，畢業(yè)遙遙無期?。∧敲慈绾未蛞粓銎恋募毎Ｐl(wèi)戰(zhàn)呢？下面就跟隨小編一起來學起來吧~

*步：認識細胞培養(yǎng)過程中有哪些污染？

細胞培養(yǎng)污染是指培養(yǎng)環(huán)境中侵入了對細胞生存有害的成分和造成細胞變異的異物。體外細胞培養(yǎng)污染可分為三類：物理性、化學性及生物性污染。

物理性污染：
物理性污染通過影響細胞培養(yǎng)體系中的生化成分，從而影響細胞的代謝。
物理性污染的來源：培養(yǎng)環(huán)境中的物理因素，如溫度、放射線、振動、輻射（紫外線或熒光）會對細胞產(chǎn)生影響。
物理性污染的現(xiàn)象：細胞、培養(yǎng)液或其他培養(yǎng)試劑暴露在放射線、輻射或過冷過熱的溫度中，可以引起細胞代謝發(fā)生改變，如細胞同步化、細胞生長受抑制，甚至細胞死亡。
化學性污染
化學性污染是一些對細胞有毒性的或?qū)毎a(chǎn)生刺激的化學物質(zhì)。
化學性污染的來源：
未純化的物質(zhì)、試劑、水、血清、生長輔助因子及儲存試劑的容器都可能成為化學性污染的來源。細胞培養(yǎng)的必需養(yǎng)分（如氨基酸）若濃度超過了合理的范圍，也會對細胞產(chǎn)生毒性。同樣，不同細胞系在*培養(yǎng)條件下對血清和緩沖液的要求是不一樣的，在培養(yǎng)中應(yīng)嚴格控制。
化學性污染的現(xiàn)象：化學性污染同樣會使細胞生長受抑制，甚至細胞死亡。
生物污染
生物污染包括比較容易發(fā)現(xiàn)的細菌、霉菌和酵母的污染，和較難發(fā)現(xiàn)的病毒、支原體和其他細胞的污染。
生物性污染的來源：
● 取材不慎或處理不當
● 空氣塵埃
● 消毒不嚴
● 操作不當
● 試劑尤其是血清污染
生物性污染的現(xiàn)象：
● 細菌：G+菌較多。
● 真菌：霉菌較多。
● 支原體：不易檢測。
● 病毒：由于病毒有種屬特異性，所以病毒污染的概率比較小。

第二步：做好預(yù)防污染措施
針對細胞污染的三個分類，做好如下預(yù)防措施：
A.物理性污染的預(yù)防
● 實驗室的合理設(shè)計及建立規(guī)范的操作規(guī)程；
● 培養(yǎng)箱應(yīng)放在恒溫的環(huán)境中；
● 培養(yǎng)液及試劑應(yīng)放在固定位置，而且要注意避光，試劑周圍不能放置同位素；
● 從冰箱中取出的培養(yǎng)液應(yīng)在室溫條件中放置一段時間后再進行使用，以避免過冷的溫度對細胞的影響。
B.化學性污染的預(yù)防
● 使用的所有物質(zhì)都應(yīng)是高純度的，同時正確配制和儲存培養(yǎng)液及試劑。
● 在配制液體和清洗容器時必須使用不含雜質(zhì)的超純水。
● 選用同一批次的血清。
● 在選用器皿時，根據(jù)被培養(yǎng)細胞的生長特性、培養(yǎng)方式和所用培養(yǎng)液的性質(zhì)來選用適合的器皿來達到實驗的準確性和可靠性。
C.生物性污染的預(yù)防
● 建立規(guī)范的無菌操作程序及各種規(guī)章制度，并嚴格執(zhí)行。
● 控制環(huán)境污染，同時注意實驗人員的防護及無菌服的潔凈和無菌。
● 保證細胞培養(yǎng)基和器材無菌。
● 在細胞培養(yǎng)基中加入適量的抗生素。
預(yù)防是防止細胞培養(yǎng)過程中發(fā)生污染的辦法。只有提前做好預(yù)防工作，才能將發(fā)生
污染的可能性降到zui小程度。

Cell pollution is the enemy of cell culture. Preventing and avoiding pollution is the key to the success of cell culture. Once the enemy will come to naught, not only a waste of time, and a waste of manpower and material resources, and even cause irreparable loss. And little children's shoes often complain to me: every graduation season, the blue thin, letinous edodes is because of the cell dead batch after batch, graduation far away ah! So how do you fight a beautiful cell defense? Then follow the little editor to learn.

The first step: what are the pollution in the process of cell culture?

Cell culture pollution refers to the invasion of elements which are harmful to the survival of cells and the foreign bodies that cause cell mutation in the culture environment. In vitro cell culture pollution can be divided into three categories: physical, chemical and biological pollution.

Physical pollution:
Physical pollution affects the metabolism of cells by affecting the biochemical components of the cell culture system.
The sources of physical pollution: physical factors in the culture environment, such as temperature, radiation, vibration, radiation (ultraviolet or fluorescence), can affect cells.
The phenomenon of physical pollution: cells, culture fluids or other culture reagents exposed to radiation, radiation or supercooled superheated temperatures can cause changes in cellular metabolism, such as cell synchronization, cell growth inhibition, and even cell death.
Chemical pollution
Chemical pollution is a chemical substance that is toxic to cells or stimulates cells.
Sources of chemical pollution:
Containers of non purified substances, reagents, water, serum, growth cofactors and storage reagents can all be the source of chemical pollution.  The essential nutrients (such as amino acids) in cell culture, if the concentration exceeds the reasonable range, can also be toxic to the cells. In the same way, the requirements of different cell lines to the serum and buffer solution are different under the best culture conditions, and should be strictly controlled in the culture.
Chemical pollution: chemical pollution can also inhibit cell growth and even cell death.
Biological pollution
Biological pollution includes contamination of bacteria, fungi, and yeast, which are easier to detect, and the contamination of viruses, mycoplasma and other cells that are more difficult to detect.
Sources of biological pollution:
Inadvertently or mishandled
Air dust
Disinfection is not strict
Improper operation
Reagents, especially serum pollution
The phenomenon of biological pollution:
Bacteria: more G+ bacteria.
Fungi: more fungi.
Mycoplasma: it is not easy to detect.
Virus: the virus has a species specificity, so the probability of virus contamination is relatively small.

The second step: do a good job of preventing pollution
According to the three categories of cell pollution, the following preventive measures are done:
Prevention of physical pollution in A.
The rational design of the laboratory and the establishment of a standardized operating procedure.
The incubator should be placed in a constant temperature environment.
The c*tion liquid and reagents should be placed in a fixed position, and the light should be avoided, and the isotopes can not be placed around the reagent.
The culture liquid extracted from the refrigerator should be used at room temperature for a period of time to avoid the effect of the supercooling temperature on the cells.
Prevention of B. chemical pollution
All substances used should be of high purity, and the culture fluid and reagents are properly prepared and stored.
Ultra pure water containing no impurities must be used in the preparation of liquid and cleaning containers.
Select the same batch of serum.
When selecting utensils, according to the growth characteristics of the cultured cells, the way of culture and the nature of the culture medium, we choose suitable containers to achieve the accuracy and reliability of the experiment.
Prevention of C. biological pollution
The establishment of standardized aseptic procedures and various rules and regulations, and strict implementation.
Control the environmental pollution, and pay attention to the protection of the laboratory personnel and the cleanliness and asepsis of the aseptic clothes.
Ensure the asepsis of cell culture medium and equipment.
An appropriate amount of antibiotics is added to the cell culture medium.
Prevention is the best way to prevent pollution in the process of cell culture. Only if the precautionary work is done ahead of time, can it happen
The possibility of pollution is minimized.