Title: Scheme of the medullar changes in the lymph node after antigen stimulation
Description: Upon antigenic stimulation the reticular cells that line the medullar sinusoids start to phagocytise the antigens (i.e. infective agents) and change from small tiny stellate cells into swollen large cells due to phagocytosis. They detach from the medullar sinus wall. After ten days the situation has been restored to normal appearance.
(A): Normal medulla
(B): Acute antigen-stimulated medulla (after one to three days, phagocytosis).
(C): Antigen-stimulated medulla (after ten days, recovery)
Keywords/Mesh: lymphatic tissue, lymph node, reticular tissue, histology, POJA collection