Assertion: tissue's matrix | /r/HasProperty | alghazali et al.
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text: The sustained release of these substances while they maintain their biological activity can be controlled by different methods such as the functionalization of the CaP surface through coprecipitation (Liu et al., 2004, 2017), covalent grafting (Chatzinikolaidou et al., 2010; Mercado et al., 2009), or encapsulation in hydrogel microspheres or a matrix (Alghazali et al., 2015; Watson et al., 2014).