Phil. Journal of Internal Medicine (Vol.11 No.1) Volume 11 Number 1 January - March 1973 Issue C O N T E N T S Laboratory and Clinical Studies on Minocycline Rodolfo L. Jao, M.D. and Chin Stagg-Saranglaw, M.D. Propanolol in Hypertension Lourdes Lai – Foo Canto, M.D. and Nicasio G. Encarnacion, M.D. FL1039, A New Semi-Synthetic Penicillin. Preliminary Report on its Use in Enteric Fever Benjamin M. Limson, M.D. Clinical and Bacteriological Study of the Efficacy of Dihydroxymethylfuratrizine in the Treatment of Diarrheas due to Gram Negative Bacilli and Gram Positive Cocci: A Preliminary Report Pedro P. Chanco, Jr., M.D.; Rosa Guevarra, M.D.; Loreto R. Cabatit, M.D. and Ma. Agnes B. Simbol, M.D. Multicentric Reticulohistiocytosis— A Case Report Lourdes A. Manahan, M.D.