培养的细胞做透射电镜需要怎么处理

2025-04-07 13:45:58
推荐回答(1个)
回答1:

用扫描电镜方法简便快速.①相差显微境检测:将细胞按种于事先放置于培养瓶内的盖玻片上,24h后取出,用相差油镜观察.支原体呈暗色微小颗粒位于细胞表面和细胞之间。②荧光染色法:荧光染色用能与DNA特异性结合的荧光染料Hoechst 33258,可使支原体内含有的DNA着色,染色后用荧光显微镜观察。具体方法如下:首先将细胞接种盖玻片上,在细胞未长满前取出玻片,用不合酚红的Hanks液漂洗一下,用l: 3醋酸甲酵固定10Min,然后用生理盐水漂洗.置于用生理盐水配浓度为50pg/ml的Hoechst 33258中染色10min。染色后用蒸溜水洗1—2min.向细胞面滴加pH5.5磷酸缓冲液数滴,然后置荧光显微镜下观察。镜下支原体为散在于细胞同围或附于细胞膜表面的亮绿色小点。③电镜检查;用扫描电镜方法简便快速.也可以利用透射电镜。④DNA分子条文检查或支原体培养等方法:检出率高.但方法较为复杂

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