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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/).
Cytotoxicity assays of complex 4, when it was incubated in A549 cell line for 24 h, in a range of concentration between its IC50 and ¼ IC50 values. In dark (left); Under irradiation at 470 nm (right).