“…Initial tran sitory leucocytic reactions against larger quantities of mycobac teria and their explanation are well known (4,18,21,25,26,36,37,48). Remarkable and quite unusual is the persistence of a leu cocytic reaction in the shape of small micro-abscesses around mycobacterial agglomerations, in our cases even for several months, and in 2 cases for more than 2 years after vaccination.…”