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. 2021 Feb 5;22(4):1620. doi: 10.3390/ijms22041620

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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 (http://creativecommons.org/licenses/by/4.0/).

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Immunohistochemistry analysis of glioblastoma (GBM) and peritumoral (PT) areas of surgical samples. Primary tumor specimens and adjacent brain tissue were collected, fixed in 10% formalin, and analyzed by means of immunohistochemistry. Arrowheads indicate the immunoreactivity of O6-methylguanine methyltransferase (MGMT), breast cancer resistance protein (BCRP1), and A2B5 in both areas. (A,C,E) MGMT, BCRP1, and A2B5 expression in GBM samples; (B,D,F) MGMT, BCRP1, and A2B5 expression in PT tissue.