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Background
Oral leukoplakia concomitant with oral submucous fibrosis is a high‐risk oral potentially malignant disorder, but little is known about its immune microenvironment.
Methods
Thirty samples of oral leukoplakia concomitant with oral submucous fibrosis, 30 oral leukoplakia samples, and 30 oral submucous fibrosis samples were collected from two hospitals. Immunohistochemistry was performed...