A eras is rosea Nucleolus — Hohl and Hamamoto 
403 
Fig. 1 . Part of a cell of Acrasis rosea showing nucleus (NU) with two components of the nucleolus 
(1,2) as described in the text. X 25,000. The black bar in all pictures represents lp. 
Fig. 2. Nucleus of Acrasis rosea with components 1 and 3 of nucleolus. Note lighter and darker areas 
within component 1. X 20,800. 
Fig. 3. Example of component 1 aggregated into a large mass. Cytoplasmic invagination (/) and nuclear 
evagination ( E ) are seen at upper left. X 20,000. 
