PROPERTIES OF EGG FRACTIONS I37 



Desoxyribonuclease (DNase) activity of white halves is greater than 

 red but not per unit volume. (Mazia, Blumenthal, and Benson, 1948; 

 Mazia, 1949 a, b). 



Phosphatase activity (acid or alkaline) is not restricted to white 

 halves (Mazia, Blumenthal, and Benson, 1948). 



For distribution of peptidase and catalase in fractions of other eggs 

 ( Paracentrotus lividus, Psammechinus miliaris, Echinarachnius, Dendraster) 

 see Holter and Linderstrom-Lang (1940) and Holter (1949). 



Lipids. - 75% of free fats and sterols, 56% of boun^ lipids, and 61.6% 

 of total lipids are present in the red halves (Hunter and Parpart, 1946). 



