The Journal of Histology& Histochemistry is one of the series issued twice by the Egyptian Society of Biological Sciences and is devoted to the publication of original papers related to histological, histochemical, toxicological, physiological changes associated with individuals, and populations. In addition, the journal promotes research on biochemical and molecular-biological or environmental, toxicological and occupational aspects of pathology are requested as well as developmental and histological studies on light and electron microscopically level, or case reports.