This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Which is found in coex of lymph node? 
Select and explain. 
A. Lymphocyte aggregates, B. Billroth cords, C. Macrophages, D. Connective tissue
A: Lymphocyte aggregates
Answer: A: Lymphocyte aggregates 
Explanation: Within the coex there are several rounded areas that are called lymphatic follicles or lymphatic nodules.Each nodule has a paler staining germinal centre surrounded by a zone of densely packed lymphocytes Inderbir Singh&;s human Histology Seventh edition Pg 132