00277nam a2200097Ia 4500008004100000040001100041100002000052245005500072260003800127300001400165251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aJohn N. Abelson 0aBiochemical And Biophysical Research communication  c1989-1990bACademic PressaLondon  bV.158-173