License Renewal Information: 1  All Physician and Physician Pro Bono licenses expire on April 30 of odd-numbered years.  All Physician Training licenses expire on August 31, 2015, are good for three years, and can only renew once (for a total of six years).
The white blood cells or lymphocytes produced by these lymph nodes kill bacteria and viruses entering the body. Lymph nodes are very small organs, only about 1-2 cm in size and are found as a network throughout the body.odgkin's Disease. Hodgkin's disease is one of the serious lymph nodes diseases, and it is a type of cancer, in which the lymphocytes are commonly affected and the victim with this type of cancer becomes vulnerable to many other diseases as the immune system is going be to partially or completely destroyed.
The immune system is made up of a complex network of cells and organs that protect the body from infection. The Immune System-Click to Enlarge. Lymph nodes are part of the immune system. They release lymphocytes, a certain type of white blood cell that fights infection.The blood vessels and lymph vessels carry the lymphocytes to and from different areas in the body. Each lymphoid organ plays a role in the production and activation of lymphocytes.ymph nodes are part of the immune system. They release lymphocytes, a certain type of white blood cell that fights infection. The blood vessels and lymph vessels carry the lymphocytes to and from different areas in the body.