Colonies of nuclei formed by amitosis

Fig. 11 This photomicrograph demonstrates that the underlying structure of reassembling chromatin consists of mutiple nuclei forming as colonies linked by reticular material that stains for nucleic acids. Absolutely no evidence of chromosomal structures has been found in studies of this final phase of differentiation necessitating the conclusion that these nuclei are arising by an amitotic process.

The conclusion that nuclei form in colonies is supported by this photomicrograph of a predome forming the nuclei of cells that will fill the apical basal envelope of the developing dome. Nucleoli are obvious in most of the nuclei. Nuclei appear to be "launching" themselves out of the colony, suggesting that microtubules plus nuclei, a structure known as microbodies, are rearranging themselves into the regular array that will make up the surface of the dome.