The system also includes all the structures dedicated to the circulation and production of lymphocytes (the primary cellular component of lymph), which also includes the bone marrow, and the lymphoid tissue associated with the digestive system.
De asemenea, sistemul include toate structurile dedicate circulației și producerii de limfocite (componenta celulară principală a limfei), care include, de asemenea, măduva osoasă, și țesutul limfoid asociat cu sistemul digestiv.