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. Author manuscript; available in PMC: 2021 Dec 1.
Published in final edited form as: Laryngoscope. 2020 Jan 6;130(12):E773–E781. doi: 10.1002/lary.28493

Fig. 1.

Fig. 1.

Glutaminase (GLS) is highly expressed in human iatrogenic laryngotracheal stenosis (iLTS). (A) Immunohistochemistry demonstrating intense staining of GLS in all fibroblasts within the thickened lamina propria (LP) of a cricotracheal resection specimen (CTR) from an iLTS patient. (B) Representative hematoxylin and eosin (H&E)-stained section of the same CTR specimen. (C) GLS staining in a normal trachea specimen. (D) Representative H&E-stained section of the same normal specimen. (E) Quantitative polymerase chain reaction demonstrating iLTS scar specimens to have increased gene expression of GLS compared to normal trachea specimens. Scale bars: 50 μM. L = left. [Color figure can be viewed in the online issue, which is available at www.laryngoscope.com.]