y-mf^^-^m^^M^^-^-^v^m^M^^W^^f^^m^-' ■_ ^'^'^^i' 



M 



■M 



M 



/■ 



M 



^- 



1 . J» ^ 



M 



M 



E- 



.** 



M' 



M 



.E 



M 



- ^m^- 



N 



M 



■Its* ! »»„-^^ m' _ * '. 



M 



. r 





f. 



M 





H 



■^y 



X 



i^ 



?N 



i" 







_>^-'' 



*v 



^^^k^. Mkt^£>^ 



■A 



> 16.^2'?'' 



Fig. 4. Rat liver cells, (a) Unirradiated animal: (b) 4 hours after whole-body X-irradiation 

 with 1,000 r. Condensation of the mitochondria (M), derangement and partial vacuolation 

 of the ergastoplasm (E) and agranular endoplasmic reticulum. There is a reduced number of 

 clearly visible inner cytoplasmic membranes. N. nucleus; j. , small lipid droplets. > 20,000. 



