CIL:34536, Tetrahymena pyriformis, cell by organism, eukaryotic cell, Eukaryotic Protist, Ciliated Protist. In Cell Image Library

High resolution view of the nuclear envelope of both the macronucleus, seen here, and the micronucleus consists of 2 membranes containing numerous perforations called pores. Proteins are imported through these pores and ribosomal subunits are transported out of the macronucleus through the same pores. TEM taken on 8/16/67 by R. Allen with a Philips 200 operating at 60kV. Neg. 12,400X. The raw film was scanned with an Epson Perfection V750 Pro. This image is best used for quantitative analysis.本图像展示了大核与小核的核被膜（nuclear envelope）的高分辨率视图，两类核的核被膜均由两层膜组成，膜上分布有大量被称为核孔（pore）的穿孔结构。蛋白质可通过这些核孔被输入细胞核内，核糖体亚基则经由同一类核孔从大核中转运出核。该透射电子显微镜（Transmission Electron Microscope, TEM）图像由R. Allen于1967年8月16日拍摄，使用加速电压为60kV的飞利浦200型透射电镜，放大倍数为12400倍。原始胶片通过爱普生Perfection V750 Pro扫描仪完成数字化扫描。本图像最适用于定量分析相关研究。