NDUFAB1 and hepatocellular adenoma: In full accordance with the powder XRD results (Figure 1), the IR spectra of Figure 2b give no evidence for HCA formation during the first 12 h of SBF immersion, while the overall low IR intensities observed also implies insignificant ACP contents in all BG454.0–τSBF specimen with τSBF⩽12 h.