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. Author manuscript; available in PMC: 2015 Nov 21.
Published in final edited form as: J Mater Chem B. 2014 Nov 21;2(43):7524–7533. doi: 10.1039/C4TB01046A

Figure 1.

Figure 1

Preparation and mineralization of the zwitterionic PSBMA, PMPC, and PCBMA hydrogels. (a) Chemical structures of the three zwitterionic monomers and the schematics of their photo-crosslinking. (b) A representative image of the photo-crosslinked zwitterionic hydrogel. (c) A representative image of a mineralized zwitterionic hydrogel. The HA-mineralization was mediated by the gradual pH increases resulting from the thermal decomposition of urea. (d) A representative optical micrograph of the mineral nodules formed within the zwitterionic hydrogel.