010 p. GOLDHABER 



grown in stationaiv Leighton tubes by introducing high concentra- 

 tions of oxygen into the gas phase every 2 to 3 days at the time of 

 refeeding the cultures. By using various oxygen concentrations in 

 the gas mixture (from to 100 per cent) it has been possible to 

 demonstrate a direct correlation between oxygen concentration and 

 extent of bone resorption (Goldhaber, 1961). Furthermore, on 



Figures 1 to 6 



