00285nam a2200109Ia 4500008004100000040001100041100001800052245004000070260003600110300001800146300001100164251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aHerbert Tabor 4aThe Journal of Biological Chemistry  c1991bWaverly Press Inc.aU.S.A  aP. 9339-10710  bV. 266