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DAPI染色原理知多少

更新时间: 2020-07-09 00:00:00     

DAPI 是一种能够与DNA强力结合的荧光染料。它结合到双链DNA小沟的AT碱基对处,一个DAPI分子可以占据三个碱基对的位置。结合到双链DNA上DAPI分子的荧光强度提高大约20倍,常用与荧光显微镜观测,根据荧光的强度可以确定DNA的量。另外,因为DAPI可以透过完整的细胞膜,它可以用于活细胞和固定细胞的染色。

关键词: dapi 染色 原理 多少

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