For several decades I have been wanting to study these intracisternal protein bodies, since they are spectacularly organized, seem to grow from two ends, and have large ribosome-protein complexes at the growing end and can sometimes be seen in cross section as concentric rings with a central point.  I pseudo-colored this ferret type II cell in with colors. It is from a collection of photomicrographs which depict these bodies and an especially interesting and organized sample.  High resolution images are available on two separate image libraries, but here is a thumbnail image.