Figure 2From: Spontaneous regression of metastatic cancer cells in the lymph node: a case reportImmunohistochemical validation of the tumor‒regressed lymph node. (A‒C) Cytokeratin AE1/AE3 immunostaining. (D-F) Ki- 67 staining. There were no Ki-67(+) proliferating cells around the tumor-regressed remnant keratin debris (Inserts showed higher magnification views).Back to article page