00317nam a2200109Ia 4500008004100000040001100041100002100052245004000073260006600113300001700179300001100196251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aWilliam H. Stein 4aThe Journal of Biological Chemistry  c1970bThe American Society of Biological Chemists, IncaU.S.A  aP. 2189-3274  bV. 245