There are approximately 11,000 active licensed Customs brokers in the United States. Corporations, partnerships and associations must have a broker license to transact Customs business. Each of these businesses must have at least one individually licensed officer, partner or associate to qualify the company's license.
Bone marrow is the flexible tissue in the interior of bones. In 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).he two types of bone marrow are red marrow (Latin: medulla ossium rubra), which consists mainly of hematopoietic tissue, and yellow marrow (Latin: medulla ossium flava), which is mainly made up of fat cells.
Bone marrow is soft, gelatinous tissue that fills the medullary cavities-the centers of bones. There are two types of bone marrow: red bone marrow (also known as myeloid tissue) and yellow bone marrow (fatty tissue). 200 billion new blood cells are made by the bone marrow every day. 2  Healthy bone marrow manufactures between 150,000 and 450,000 platelets per microliter of blood, the amount of blood that fits on the head of a pin. 3  Bone marrow contains mesenchymal and hematopoietic stem cells.