school. From 1954 to 1973 Stefan Ślopek held the position of the head of the Faculty and Department of Clinical Microbiology of the Wrocław School of Medicine and beginning in September 1954, up to the moment of his retirement in December 1985, the director of the Ludwik Hirszfeld Institute of Immunology and Experimental Therapy of the Polish Academy of Sciences in Wrocław. As a result of his long term efforts the new premises at 12 Czerska street were built and since 1975 have been the location of the Ludwik Hirszfeld Institute of Immunology and Experimental Therapy. The Institute is known as the centre of research in the field of immunology and experimental therapy in Poland, and owing to its wide cooperation with many foreign laboratories, it renders great service to the exploration of immunological phenomena and immunological differentiation of living organisms. Stefan Ślopek is the author of over 300 original scientific papers, above 30 reviewed and popularized scientific publications, 7 manuals, 7 monographs among them Immunology, Practical Immunology, Medical Microbiology (published: 1955, 1958, 1965, 1966, 1972), Clinical Microbiology, Dictionary of Immunology (published: 1980, 1983). He is also a coauthor of numerous chapters in books published in Poland and other countries. Phage therapy The most detailed publications documenting phage therapy have come from Stefan Ślopek's group at the Institute of Immunology and Experimental Medicine of the Polish Academy of Sciences in Wroclaw. Ślopek wrote six papers on phagotherapy in which he discussed the efficiency of bacteriophages against bacterial infections including those caused by multi-resistance mutants. In one paper, Ślopek describes the effect phages had on his patients suffering from sepsis caused by bacterial infections. From 1981 to 1986, five hundred and fifty cases were treated, all aged from 1 to 86. The treatment began with antibiotics; however, they turned out to be inefficient for five hundred and eighteen patients. Therapy began by isolating the phages to form the etiologic agents which were then administrated to the patients. The treatment could be taken either orally (phages were given three times a day before eating after the patient had received the necessities to neutralise gastric acids) or locally (application on wounds or cavities of a moist containing phages). Additionally drops of the etiologic serum could be dropped on the eyes. In case the bacteria became resistant the phages were replaced by newly selected phages. All in all, the phage therapy appears to be