FMA definition : Heterogeneous anatomical cluster, each instance of which consists of meshwork of some
connective tissue filled with marrow cells, such as myelocytes, megakaryocytes and
fat cells, and located within cavity of some bone.;
Heterogeneous anatomical cluster, each instance of which consists of meshwork of some
connective tissue filled with marrow cells, such as myelocytes, megakaryocytes and
fat cells, and located within cavity of some bone.