A part of the immune system that consists of the phagocytic cells located in reticular connective tissue. The cells are primarily monocytes and macrophages, and they accumulate in lymph nodes and the spleen. The Kupffer cells of the liver and tissue histiocytes are also part of the RES[WP].
retroauricular region
sac +
septum +
sex-specific anatomical structure +
skeletal musculature +
structure with developmental contribution from neural crest +