The work in  Histopathology – Lab. in NCH was started where in this laboratory histological slides of bone marrow biopsy processed by using the (Microtome) through which the bone marrow samples cut up into slices of the unit thickness of 4 microcrom . After staining these slide are read to determine the disease. The opening of this section considered excellent progress to simplify the routine work for patient and to get result as soon a possible