00297nam a2200109Ia 4500008004100000040001100041100002000052245005500072260003500127300001400162300001100176251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aJohn N. Abelson 0aBiochemical and biophysical research communication  c1989bAcademic PressaNew York  aP. 1-1469  bV. 158