More ferret alveolar type II cell tangential periodicity in RER granules. The periodicity is easy to see. The diagram is arranged as previous post, the whole cell on the left, the red box shows the insets on the right, and upper right has the original unprocessed, and the lower right is “burned” in the areas that I think are indicative of spaced molecules (hopefully this is surfactant protein A).  I am open to discussion on this.