This photomicrograph shows the capsule (Cap), capsular sinus (CS), trabeculum (T), trabecular sinus (TS), lymph nodule (LN), medullary cords (MC) and medullary sinuses (MS). The cortex is where the lymph nodules are located and the medulla is where the medullary cords and sinuses are located.

 

 

 

This shows a close-up of a lymph nodule with a germinal center (GC).