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. 2021 Jun 11;57(6):607. doi: 10.3390/medicina57060607

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(a–d) Immunohistochemical micrographs of inpatients with nasal polyps and control subjects. (a) 42-year-old male with healthy nasal mucosa. Numerous IL-12 positive structures in the epithelium of the control sample, but few positive structures in the connective tissue. IL-12 IMH, X 250. (b) 30-year-old female with CRSwNP. Few IL-12 positive structures in epithelium and numerous positive structures in the connective tissue of a nasal polyp. IL-12 IMH, X 250. (c) 42-year-old male with healthy nasal mucosa. Few to moderate number of Ki67 positive structures in the epithelium and occasional positive structures in connective tissue of the control sample. Ki67 IMH, X 250. (d) 33-year-old male with CRSwNP. Few Ki67 positive structures in epithelium and connective tissue of a nasal polyp. Ki67 IMH, X 250.

(a–d) Immunohistochemical micrographs of inpatients with nasal polyps and control subjects. (a) 42-year-old male with healthy nasal mucosa. Numerous IL-12 positive structures in the epithelium of the control sample, but few positive structures in the connective tissue. IL-12 IMH, X 250. (b) 30-year-old female with CRSwNP. Few IL-12 positive structures in epithelium and numerous positive structures in the connective tissue of a nasal polyp. IL-12 IMH, X 250. (c) 42-year-old male with healthy nasal mucosa. Few to moderate number of Ki67 positive structures in the epithelium and occasional positive structures in connective tissue of the control sample. Ki67 IMH, X 250. (d) 33-year-old male with CRSwNP. Few Ki67 positive structures in epithelium and connective tissue of a nasal polyp. Ki67 IMH, X 250.