Nuclear pores: HeLa cells after irradiation with 30 joules UV — from an experiment trying to figure out how inhibitors of some of the caspases affected apoptosis. This study was from the 1980s and there are some interesting things never mentioned in that study which can be useful to someone out there doing electron microscopy on the nucleus.

There can be no doubt that some controls on nuclear size shape and activities are changed in HeLa cells… probably so different than the HeLa cells which started out way earlier than that. But while looking over “nuclear pores” in a different study I just happened to look over nuclear pores in this HeLa cell which had been exposed to 30j of UV.  I can find some evidence of nuclear pore cytoplasmic filaments but no nuclear pore baskets. So this is an N of 1, therefore not significant in and of itself, but when I googled nuclear pores and HeLa cells, there were publications, thus it is not an unusual, nor never-seen, entity.

Some of the central densities are missing from these nuclear pores as well.
Other interesting features include the “presumed” granular portion thee is a pattern, both on the upper margin before the “neck” (whose significance is not known) and also on the surface past the “neck”, I have put a checker board behind elements which appear to be organized into alternating space.  There are cytoplasmic filaments seen below but no nuclear side basket.  This is the most perpendicular section seen in this micrograph.