[Tuberculin skin tests in clinical practice]

After a short survey of the main tubercolinic cutaneous tests the Author dwells particularly upon Tine test and intradermoreaction. Then it's produced a casuistics about two groups of it's people with different stories as for B. Kock infection. The results obtained checking up the two groups with Tine test or with intradermoreaction are lastly compared under the epidemiological and clinical picture.