Richard Allen (University of Hawaii) (2011) CIL:36240, Tetrahymena pyriformis, cell by organism, eukaryotic cell, Eukaryotic Protist, Ciliated Protist. CIL. Dataset

Cell division in Tetrahymena occurs by lateral binary fission and results in an anterior proter and a posterior opisthe. Prior to division rows of basal bodies elongate as new basal bodies are formed next to preexisting basal bodies. The cell essentially doubles in length but not in width. A new oral region and a new contractile vacuole form and in amicronucleate strains the macronucleus divides. TEM taken on 8/8/67 by R. Allen with Philips 200 operating at 60kV. Neg. 1,800X. Bar = 2.0µm. The negative was printed to paper and the image was scanned to Photoshop. This digitized image is available for qualitative analysis. There is a high resolution version of this image in the library (CIL:39801) which is available for quantitative analysis. Additional information available at (http://www5.pbrc.hawaii.edu/allen/).

四膜虫的细胞分裂通过横向二分裂的方式进行，进而形成前部的生殖体和后部的后体。在分裂之前，基体行列逐渐延长，同时新的基体在现有基体旁形成。细胞长度基本翻倍，但宽度不变。新的口部区域和新的收缩泡形成，在无核小体菌株中，大核也会进行分裂。此次透射电子显微镜（TEM）图像由R. Allen于1967年8月8日拍摄，使用Philips 200型仪器在60kV的电压下进行操作。负片放大倍数为1,800倍，刻度尺长度为2.0微米。该负片被打印在纸上，随后图像被扫描至Photoshop中。此数字化图像可用于定性分析。该图像的高分辨率版本存档于图书馆（CIL:39801），可供进行定量分析。更多信息请访问（http://www5.pbrc.hawaii.edu/allen/）。