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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/).
Morphological aspect of the SK-MEL28 cells following the 24 h treatment with compounds 4 and 6 (0.1, 1, and 5 μM). The arrows indicate the round and detached cells suggesting cell death. The scale bars represent 100 μm.