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 Immune system is a complex network of cells (such as lymphocytes) and organs that work together to defend the body against foreign substances (antigens) such as bacteria, a virus or tumor cell.When the body discovers such a substance several kinds of cells go into action in what is called an immune response.ymphocytes are divided mainly into B and T cells. 1  B lymphocytes produce antibodies-proteins (gamma globulins) that recognize foreign substances (antigen) and attach themselves to them. 2  B lymphocytes (or B cells) are each programmed to make one specific antibody.