00301nam a2200109Ia 4500008004100000040001100041100001600052245004100068260006000109300001300169300000900182251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aPeyton Rous 4aThe Journal of Experimental Medicine  cJanuary 1, 1962bThe Rockefeller Institute PressaU.S.A  aP. 1-683  bV.41