From 1970 through 1977, the NFL season consisted of 14 regular season games and six exhibition games, sometimes but not always three at home and three away (the 1973 Washington Redskins, for instance, played five out of six preseason games at home), with some played at neutral sites.
Lymphocytes, the primary cells of the lymphatic system, make up roughly one-fourth of all white blood cells in the body. Like other white blood cells, they are produced in the red bone marrow. Lymphocytes constantly travel throughout the body, moving through tissues or through the blood or lymph vessels.
Your lymphatic system contains lymphocytes that work to protect you against bacteria, viruses, etc., that invade your body. An abnormal cell of this type does not cause a calcified lymph node but it can cause lymphoma. The primary jobs of your lymphatic system are: 1  Collect and then return interstitial fluid.our lymphatic system contains lymphocytes that work to protect you against bacteria, viruses, etc., that invade your body. An abnormal cell of this type does not cause a calcified lymph node but it can cause lymphoma. The primary jobs of your lymphatic system are: 1  Collect and then return interstitial fluid.