A high magnification view of the above septum in planar view and the septal pores that connect adjacent alveoli. The pores always lie next to the junction of the septum with the outer alveolar membrane. TEM taken on 11/2/68 by R. Allen with Philips 300 operating at 60kV. Neg. 39,900X. Bar = 0.1µm.
Standard glutaraldehyde fixation followed by osmium tetroxide, dehydrated in alcohol and embedded in an epoxy resin. Microtome sections prepared at approximately 75nm thickness. 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:38897) which is available for quantitative analysis. Additional information available at (http://www5.pbrc.hawaii.edu/allen/).
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