MITOSES 



PRESSION: 



760mm. 660 

 Hg. 



560 460 



360 



260 160 



Fig. 9.5 — Linear relation between pressure of atmospheric air and mitoses in bone-marrow 

 erythroblasts studied by culture In vitro. The results are expressed as percentages of the 

 maximum mitotic rate, i.e., that of basophil erythroblasts at atmospheric pressure. (After 

 Astaldi et al.") 



