This section is cut at a level where the macronucleus is folded so it appears to be in 2 parts and where the micronucleus is visible. Contractile vacuole, perioral kinetids, and the peristome is evident. TEM taken on 6/10/69 by R. Allen with Philips 300 operating at 60kV. Neg. 3,570X. Bar = 2µm.
Standard glutaraldehyde fixation followed by osmium tetroxide, dehydrated in alcohol and embedded in an epoxy resin. Microtome sections prepared at approximately 75nm thickness. A print of the negative was scanned and processed in Photoshop. This image is suitable for qualitative analysis. There is a high resolution version of this image in the library (CIL:39173) which is available for quantitative analysis. Additional information available at (http://www5.pbrc.hawaii.edu/allen/).
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