00294nam a2200109Ia 4500008004100000040001100041100002000052245005500072260003500127300001300162300000900175251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aJohn N. Abelson 0aBiochemical and Biophysical Research Communication  c1990bAcademic pressaNew York  aP.1-1480  bV.16