If heart surgery is necessary in a newborn, the thymus is sometimes removed to gain better access to the heart. If a lymph node of such a patient is later studied in a microscope, one particular area of the node is found to have an unusually low number of cells. Looking at the drawing below, what is the name of this area?

Question

If heart surgery is necessary in a newborn, the thymus is sometimes removed to gain better access to the heart. If a lymph node of such a patient is later studied in a microscope, one particular area of the node is found to have an unusually low number of cells. Looking at the drawing below, what is the name of this area?
If heart surgery is necessary in a newborn, the thymus is sometimes removed to gain better access to the heart. If a lymph node of such a patient is later studied in a microscope, one particular area of the node is found to have an unusually low number of cells. Looking at the drawing below, what is the name of this area?