TOPOGRAPHY OF THE DEEP CORTEX OF THE LYMPH-NODES OF VARIOUS MAMMALIAN-SPECIES

In preceeding studies, the histology of the deep cortex of the rat lymph node was clarified. The deep cortex is made up to basic elements termed deep cortex units, some of which are fused to one another into deep cortex complexes. Each unit is a semirounded lymphocytic structure, centered on the opening of an afferent lymphatic, contiguous to the peripheral cortex, and bulging into the medulla of a node. Each unit comprises a center and a periphery, bearing distinct morphological features. The present work was undertaken to verify whether the histology of the deep cortex of nodes from various species of mammals [mouse, guinea pig, hamster, rabbit, dog, sheep, human], currently used for experimental immunology, is comparable to that of the rate. The observations yielded a positive answer to the question.