Definition that contains lymphoid tissue
- adenoid relating to or resembling lymphatic glands or lymphoid tissue
- lymphocytic leukemia leukemia characterized by enlargement of lymphoid tissues and lymphocytic cells in the circulating blood
- thymosin hormone secreted by the thymus; stimulates immunological activity of lymphoid tissue
- immune system a system (including the thymus and bone marrow and lymphoid tissues) that protects the body from foreign substances and pathogenic organisms by producing the immune response