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. 2019 Jan 31;111(9):933–942. doi: 10.1093/jnci/djy224

Figure 2.

Figure 2.

Estrogen receptor alpha (ERα) staining in oropharyngeal tumor specimens and in normal tonsillar epithelium. Three oropharyngeal squamous carcinoma (OPSC) tumor specimens and one normal tonsillar tissue specimen were stained with hematoxylin and eosin (H&E) or underwent ERα immunohistochemistry. Specimen 1 is an example of an OPSC tumor that was scored negative for ERα; specimens 2 and 3, which are OPSC, scored positive for ERα. On the far right, normal tonsillar lymphoepithelial crypt specimen with ERα-positive cells. Bars represent 200 µm.