CLINICAL PATHOLOGY IN GENERAL PRACTICE BDICALJRNAL fast bacilli recovered by culture, and in the examination of material which is limited in quantity and obtained with special difficulty, such as urine collected by catheterization of the ureters. Sensitivity Tests The range of antibiotics is steadily extending, consequently there is an increasing demand on the services of the laboratory for carrying out sensitivity tests in cases of urinary infection. It is well established that most

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... hat most staphylococci and streptococci recovered from urinary infections are sensitive to penicillin whereas Bact. coli and other coliform organisms are generally insensitive to penicillin, though often sensitive to chloramphenicol, aureomycin, or oxytetracycline. If the urine is infected with B. proteus or Ps. pyocyanea response to oxytetracycline or streptomycin may be expected in some cases. The laboratory control of chemotherapy will be discussed more fully later in this series.