During childhood, almost every human bone produces red blood cells; as adults, red blood cell production is limited to the larger bones: the bodies of the vertebrae, the breastbone (sternum), the ribcage, the pelvic bones, and the bones of the upper arms and legs.
RJ (rapper) Rodney J. Brown Jr., better known by his stage name RJ, is a rapper from Los Angeles, California. A majority of his popularity stems from his frequent collaborations with both YG and DJ Mustard.
R.J. Reynolds Tobacco Company (RJR) is one of the oldest tobacco manufacturers in the United States. It was established in 1875 by Richard Joshua Reynolds. The first manufacturing unit was based in Winston-Salem. Currently RJ Reynolds is owned by Reynolds American, which in its turn is the subsidiary of British American Tobacco.