if you have your actors go into a real place of business you will need a Location Release The Location Release says that the owners give you permission to shoot on their property. The Filming Permit is a legal document generated by a governmental body (like the City of LA) that gives you permission to shoot a film in that city.
1 Bone marrow: the tissue in the middle of bones that creates red and white blood cells 2  ... Compact bone: the heaviest, hardest type of bone in the body. 3  Lining cell: flat cells that make up and cover the outer layer of bone. 4  Marrow: a soft tissue found inside bones. 5  Osteoblast: cells make new bone.
In addition, the bone marrow contains hematopoietic stem cells, which give rise to the three classes of blood cells that are found in the circulation: white blood cells (leukocytes), red blood cells (erythrocytes), and platelets (thrombocytes).n humans, red blood cells are produced by cores of bone marrow in the heads of long bones in a process known as hematopoiesis. On average, bone marrow constitutes 4% of the total body mass of humans; in an adult weighing 65 kilograms (143 lb), bone marrow typically accounts for approximately 2.6 kilograms (5.7 lb).