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.
â lymphoid organs (e.g., spleen, thymus) â red bone marrow â¢ Make up 20â30% of circulating leukocytes â¢ Majority are stored in lymphoid organs, not circulating (remember that only about 1% of your WBCs are in the blood) Classes of Circulating Lymphocytes â¢ T cells: thymus-dependent â Make up 80% of circulating lymphocytes