Bone marrow is the spongy tissue inside some of the bones in the body, including the hip and thigh bones. When an individual faces an acute leukaemia composed entirely of blasts, one way to figure out the identity of those blasts is to use cytochemical stains. One of the most commonly used cytochemical stains is the NSE stain or the non-specific esterase stain. Bone Marrow NSE Stain test is performed on a sample of bone marrow to measure the level of Bone Marrow Pathology in the bone marrow and also to detect conditions arising from irregular results of this test such as Leukaemia and Lymphoma.