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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/).
Volumes of bone tissues newly formed around and within PMMA and PMMA/HA composite with an HA content of 40 vol % after 4 and 8 weeks of implantation (* p < 0.05).