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qjoypark

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[求助] 企鹅羽毛里的DNA提取问题

最近在做一个实验需要从企鹅羽毛里提DNA,我取了根部毛囊细胞和上面一点点硬的部分,液氮研磨以后试剂盒苯酚氯仿蛋白酶隔夜消化,PCR扩增CHD基因什么条带都看不到。问题如下:
1.这样是否一定是模版有问题,反应体系已经试过了梯度PCR 各种浓度的反应体系。均未见条带。扩增COI片段未见条带,是不是模版本身还是不行?
2.羽毛角质化的蛋白质用蛋白酶怎么消化不了?如果不行的话 消化时加一点巯基乙醇是否可以? DTT配制比较麻烦 是否可以加DTT帮助消化角蛋白?两者哪个好用?
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