PT - JOURNAL ARTICLE AU - Mason, D Y AU - Taylor, C R TI - The distribution of muramidase (lysozyme) in human tissues. AID - 10.1136/jcp.28.2.124 DP - 1975 Feb 01 TA - Journal of Clinical Pathology PG - 124--132 VI - 28 IP - 2 4099 - http://jcp.bmj.com/content/28/2/124.short 4100 - http://jcp.bmj.com/content/28/2/124.full SO - J Clin Pathol1975 Feb 01; 28 AB - The distribution of muramidase (lysozyme) in normal and pathological human tissues has been studied, using an immunohistological technique. The enzyme was demonstrated in a variety of healthy tissues, including serous salivary acinar cells, lactating mammary tissue, Paneth cells, renal tubular cells, myeloid cells (including eosinophils), and histiocytic cells. In pathological tissues the most striking positivity was encountered in reactive histiocytic cells in granulomatous conditions such as tuberculosis and Crohn's disease. The finding of this study are related to previous reports of the distribution of human and animal muramidase and the implications of patterns of muramidase staining in pathological histiocytes are briefly discussed.