Fig. 6

Biopsy results of a right cervical lymph node. Adjustments of individual color channels was performed, there were no threshold manipulation, expansion or contraction of signal ranges and the altering of high signals. a lymph node structure exists (H&E, 40 ×). b lymph node structure is not destroyed, germinal center, mantle area, cortical area, and paracortical area are visible (H&E, 100 ×). c Ki67 showed a normal germinal neutral nucleus proliferation index of 75% (IHC, 100 ×). d CD23 staining showed positive T cell membrane/plasma in the paracortical area (IHC, 100 ×). e CD20 staining showed positive B cell membranes in the follicular germinal center, mantle area, and cortical area (IHC, 100 ×). f CD21 staining showed a positive follicular dendritic network in the germinal center (IHC, 100 ×)