THE PRODUCTION OF LIVER TUMOURS BY AZO COMPOUNDS Get access JOHN W. ORR, B.Sc., M.D., M.R.C.P. JOHN W. ORR, B.Sc., M.D., M.R.C.P. Reader in Experimental Pathology, University of Leeds, Assistant Director of Cancer Research, University of Leeds Search for other works by this author on: Oxford Academic PubMed Google Scholar British Medical Bulletin, Volume 4, Issue 5-6, 1946, Pages 385–388, https://doi.org/10.1093/oxfordjournals.bmb.a072832 Published: 01 September 1946