Richard Allen (University of Hawaii), R. Wolf (2011) CIL:36232, Tetrahymena pyriformis, cell by organism, eukaryotic cell, Eukaryotic Protist, Ciliated Protist. CIL. Dataset

The contractile vacuole, an organelle used by many protists for osmoregulation of water and some ions, such as calcium, is connected to the cell surface in Tetrahymena usually by two “pores," indentations of the plasma membrane. A spent food vacuole lies nearby. TEM taken on 1/8/74 by R. Wolf with Hitachi HU11A operating at 75kV. Neg. 17,500X. Bar = 1µm. 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:39792) which is available for quantitative analysis. Additional information available at (http://www5.pbrc.hawaii.edu/allen/).

收缩性液泡，一种众多原生生物用以调节水分及某些离子（如钙离子）的细胞器，在四膜虫中通常通过两个“孔洞”，即质膜的凹陷与细胞表面相连。一个耗尽的食泡位于其附近。该透射电镜图像由R. Wolf于1974年1月8日使用日立HU11A透射电镜，在75kV电压下拍摄。负片放大倍数为17,500倍，标尺长度为1微米。该负片经打印至纸张，并扫描至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于图书馆中（CIL:39792），可供进行定量分析。更多相关信息请访问（http://www5.pbrc.hawaii.edu/allen/）。