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.
Many bones also contain a soft connective tissue called bone marrow. There are two types of bone marrow-red marrow and yellow marrow. 1  Red marrow makes red blood cells, platelets, and most of the white blood cells for the body (discussed in the Diseases and the Bodyâs Defenses chapter).any bones also contain a soft connective tissue called bone marrow. There are two types of bone marrow-red marrow and yellow marrow. 1  Red marrow makes red blood cells, platelets, and most of the white blood cells for the body (discussed in the Diseases and the Bodyâs Defenses chapter).