Scaffolding is an essential issue in tissue engineering. We have recently developed an approach to generate HA/collagen coated poly(lactic-glycolic acids) scaffolds using a porogen-leaching method [1]. The approach involves a two-step process with coating first on the paraffin microspheres and then using the coated microspheres both as the porogens and the vehicles to transfer the bioactive apatite/collagen coating. In this study, we describe an advancement of the porogen-based technology using ice-based microporogens to deposit multiple bioactive agents into the desired scaffold in a single step.

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