Show Humans Rats Are Unlike Says Prof CHICAGO IP Taking IP-Taking Taking issue with an announcement from Columbia Columbia Columbia Col Col- University of a discovery that rats prod produce ce a substance which will cure their own cancers cancels Miss Mary I associate te professor professor professor pro pro- fessor of pathology at the Uni- Uni of Chicago who has been experimenting with rats and cancer cancer cancer can can- for 25 years said last week It is is unwise to infer any re relation relation relation re- re lation between human cancer and grafted tumors in m rats rats |