130 CHOLINE 



gations in animals. Negligible excretion of choline has also been reported 

 by others'* even after giving extra choline. ^''^ Thus "loading tests" are of no 

 value in determining the choline reciuirement. 



4T. Z. Csdky, J. Mollerstrom, and O. V. Sirek, Arch. Internal Med. 84, 730-737 



(1949). 

 ^ H. Castro Mendoza, C. Jimenez Diaz, and J. del Rio, Bull. Inst. Med. Research 



(Madrid) 1, 7-17 (1948). 

 « J. de la Huerga and H. Popper, J. Lab. Clin. Med. 36, 816 (1950). 

 ' J. de la Herga, H. Popper, and F. Steigmann, J. Lab. Clin. Med. 38, 904-910 (1951). 

 8 R. Busset, Rev. med. {Liege) 6, 60-64 (1951). 



