The microcirculation of the mammalian lymph node.
Flow alterations to give complete filling of the lymphatic sinusoidal system and saccular lymph spaces around the germinal centers were demonstrated during a primary immune reaction. By contrast, in delayed hypersensitivity, saccules were not seen although there was marked enlargement of individual follicular units.
D000818:Animals; D006968:Hypersensitivity, Delayed / Q000276:immunology; D008198:Lymph Nodes / Q000166:cytology* / Q000000981:diagnostic imaging / Q000276:immunology; D011817:Rabbits; D011859:Radiography