Account Options. Patents. A portable water purification system has a prefiler, a pumping unit, a reverse osmosis unit, a microbial control unit and a post filter for removing nuclear, biological, chemical and other contaminants from a water source.
1. T-cells mature (develop immunocompetence) in thymus 2. B-cells mature in bone marrow 3. Immunocompetent lymphocytes have unique receptors, committing them to binding with a specific antigen (all 10,000 + receptors are the same) 4. Lymphocytes become immunocompetent before exposure to antigens a.ingle antigen can mobilize many lymphocytes, stimulate production of many antibodies 3. Self-antigens-our cells would be antigens to someone else a. MHC proteins (Major Histocompatibility Complex) on cell surface b. MHC proteins bind to antigens in infected cells.
The immunocompetent cells produced in the thymus are called T lymphocytes (T cells) , and those produced and maturate in the bone marrow are the B lymphocyte (B cells) . The site in the lymph node where the plasma cell produces the antibodies is called germinal centers or follicles. The primary follicles contain small B lymphocytes, following antigenic stimulation; secondary follicles develop which contain many large dividing lymphocytes and plasma cells.