Methods Check five kinds of antibody with immunohistochemistry SABC method and chose the best antigen retrieval method among poach method, microwave method and high pressure method respectively.

方法用免疫组化SABC法检测五种单克隆抗体，分别使用水煮法、微波法、高压法修复抗原，从中选出最佳修复方法。

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It extracts oil from the ground using a method called fracking - pumping down a mixture of sand, water and chemicals at high pressure.

BBC: US to become 'world's biggest oil producer'