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. 2021 Feb 3;9(2):29. doi: 10.3390/toxics9020029

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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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Toxicity of biocides on SoluAirway^TM after direct or aerosol application: (a) Tissue viability of SoluAirway^TM tissue measured with MTT assay after the exposure to biocides through direct (grey bars) or aerosol application (blue bars) for 3 h. Values are mean ± SD (n > 2) or ½difference (n = 2). NC; negative control (phosphate-buffered saline, PBS), PC; positive control (14.7 mg/mL formaldehyde) by Student t-test. (b) Representative histological photographs of the treated tissues after H&E staining. Scale bar is 20 µm. Cell debris below the transmembrane shall be ignored since they were generated during tissue section.