This section of a lymph
node shows the overall structure. The lymph node is surrounded by a thick
connective capsule beneath which is the subcapsular sinus. Beneath the sinus
is the densely vcellular cortex. The outer cortex contains lymphatic nodules
with germinal centers. The deep cortex lacks nodules, but is still densely
cellular. In the center of the lymph node is the medulla, with large medullary
sinuses and medullary cords. The medulla also contains large blood vessels.