Pseudo-colored alveolar type II cell granules, and unretouched, and composite image.  I am just about finished with this study. I submitted the manuscript, I do hope if flies without too much revision. I am very aware that it is totally descriptive, but then descriptive science was the first science and it has great value. We all learn by what we observe, more so than what we propose (hypothesize) and test.

Here is a granule from my fav guinea pig #301 neg 9837, block 17084, which has several stacked parallel periods of the layered granule all in pretty nice array perpendicular to the layering. I extracted and then rotated the cropped portions, and increased contrast, and added half transparency to these four seemingly ideal areas. I merged them (with their transparencies matched as best I could) and flattened them as a fifth inset.  This image is the inset in pink with 100 nm markers vertical and horizontal.  The individual crops are shown below, colored just for fun.