|
回帖奖励 +5
The samples were dissolved in HEPES (4-[2-hydroxyethyl]-1-piperazine ethanesulfonic acid) buffer, and a drop of the suspension was placed on a sheet of parafilm(一张保鲜膜). A carbon-coated copper grid(碳涂层铜网格) was floated on the drop for 10 seconds. Then, the grid was removed, and excess liquid was drained by touching the edge of the grid against a piece of clean filter paper. The grid was touched onto a drop of 2% uranyl acetate(醋酸双氧铀)or phosphotungstic acid(磷钨酸), pH 7.0, for approximately 5 seconds, and excess liquid was drained off. The grid was allowed to dry for several minutes and then examined using a JEM-1200 EX microscope (JEOL, Akishima, Japan) at 80 kiloelectron volts.
我还没有做出很好看的电镜,因为样品提取的不好,杂质比较多,我们可以相互交流 |
|