Show double set of ears given salamander by grafting pittsburgh four ears growing where normally only two would grow were what prof ross boss G harrison of yale university newly elected chairman ot of the national research council in washington D C reported here at the meeting of the american association ot of anat professor harrlson harrison obtained his extraordinary results through sue grafting experiments with ear early ay embryonic stages of sal amanders A part of the side of the head region regio was removed and a piece of tissue from the abdominal region set into its place organ forming influences from surrounding head tissues caused the development of s small all but otherwise normal internal em ear r structures in this transplanted piece |