Septa of bordering alveoli when lying in the plane of section exhibit pores at their outer margins closest to the plasma membrane. This shows that there is physical continuity between the lumens of alveoli. Basal bodies and fibrous systems are found in the cellular cortex beneath the ridges. Cacodylate buffered fixative. TEM taken on 11/2/68 by R. Allen with Philips 300 operating at 60kV. Neg. 20,500X. Published in J. Cell Biol. 49:1-20, 1971. Adapted with permission.
Standard glutaraldehyde fixation followed by osmium tetroxide, dehydrated in alcohol and embedded in an epoxy resin. Microtome sections prepared at approximately 75nm thickness. The raw negative was scanned with an Epson Perfection V750 Pro and this high resolution image is best used for quantitative analysis. Additional information available at (http://www5.pbrc.hawaii.edu/allen/).
|Spatial Axis||Image Size||Pixel Size|