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. Author manuscript; available in PMC: 2017 Mar 1.
Published in final edited form as: Mater Sci Eng C Mater Biol Appl. 2015 Nov 14;60:324–332. doi: 10.1016/j.msec.2015.11.039

Fig. 2.

Fig. 2

(a) X-ray diffraction patterns and (b) FTIR spectra of the hollow HA, CHA9 and CHA12 microspheres. The pattern of a reference hydroxyapatite (HA JCPDS 72-1243) is also shown in (a).