[any of the accumulations of lymphoid tissue organized as definite lymphoid organs, varying from 1 to 25 mm in diameter situated along the course of lymphatic vessels and consisting of an outer cortical and an inner medullary part; the main source of lymphocytes of the peripheral blood and, as part of the reticuloendothelial system, serves as a defense mechanism by removing noxious agents, such as bacteria and toxins. ( CSP )]
UMLS (NCI) C0024204 - Body Part, Organ, or Organ Component
Relation/PAR: lymphatic tissue
Body Part
Relation/CHD: HEV