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. 2020 Aug 21;35(3):179–188. doi: 10.7555/JBR.34.20200039

Figure 2.

Figure 2

Hematoxylin-eosin and Ki-67 staining of pancreatic neuroendocrine neoplasms.

A: Mitoses <2 per 10 HPF in Hematoxylin-eosin (HE) staining of PNENs G1. B: Ki-67 index <3% in immunohistochemical (IHC) staining of PNENs G1. C: Mitoses 2–20 per 10 HPF in HE staining of PNENs G2. D: Ki-67 index 3%–20% in IHC staining of PNENs G2. E: Mitoses >20 per 10 HPF in HE staining of PNENs G3. Black arrows indicate the mitotic cells. F: Ki-67 index >20% in IHC staining of PNENs G3. Scale bar=50 μm. PNENs: pancreatic neuroendocrine neoplasms; HPF: high power field.