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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/).
Drawing of histological characteristics in healthy (A) and osteoarthritic (B) articular cartilage. The latter illustrates the main pathological changes in cartilage during OA progression. Adapted from [3,42] and licensed under creative-common-license CC BY 4.0.