Reticular tissue constitutes the stroma of lymphatic nodes. When stained by hematoxylin and eosin, structural components of the tissue are better distinguished in light zones of the medulla that are actually lymphatic sinuses:

• reticular cells #1, #2, #3 are branched, their cytoplasm is oxyphilic, while the nuclei are rounded
• reticular fibers are found between the cells, communicating with cell surfaces; silver impregnation reveals the fibers (so they are called argyrophilic fibers)

A section stained by silver nitrate shows reticular fibers in lymphatic sinuses and medullary cords.

The sinuses and medullary cords also contain cells of lymphoid lineage #1, #2 with hyperchromatic nuclei between reticular cells.