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Fig. 9. Electron micrograph (72 000 x ) of a pigmented fraction which changed 

 into a series of more rapidly sedimenting components during purification. There is 

 a preponderance of elongated figures which tend to pair (P). The size is not uniform. 

 The widths appear to be multiples of a minimum value of about 150 A. The length 

 also varies but cannot be established in thin sections. The maximum values 

 observed are in the 1000 A range. 



