These cells are the ones responsible for the production of antibodies.
B cells develop from stem cells in the bone marrow.
The naive B cells then enter the circulation and travel around the blood and lymphatics through tissue and lymphoid organs. The B cells are called naive because they have not seen antigen yet. In the lymph nodes, naive B cells may encounter an antigen recognized by their surface antibodies. These cells die within a few days. That's not nearly as exciting as what happens to B cells that do encounter antigen.