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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 (http://creativecommons.org/licenses/by/4.0/).
The principal component analysis used for the general data overview: rats on the standard diet (blue dots—s), with the zinc nanoparticles supplementation (green dots—n) and with the zinc microparticles supplementation (red dots—m).