lymphatic tissue, lymphoid tissue - tissue making up the lymphatic system

axillary node - any of the lymph glands of the armpit; fights infections in the neck and chest and arm regions

Peter's gland, Peyer's patch - any of several lymph nodes in the walls of the intestines near the junction of the ileum and colon

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

cardiovascular system, circulatory system - the organs and tissues involved in circulating blood and lymph through the body

bubo - a lymph node that is inflamed and swollen because of plague or gonorrhea or tuberculosis