“…According to the core-shell model the Mössbauer spectra of ferritin were fitted using two paramagnetic doublets at 295 K and two magnetic sextets at 4.2 K. For Imferon, one of the ferritin models, the proposed structure of the iron core consisted of two nonequivalent positions of ferric ions, therefore an approach with two components was also applied to fit the Mössbauer spectra of Imferon [9]. However, some authors think that it is insufficient to use only two components to fit such complicated spectra [8,[10][11][12]. In particular, an application of the Mössbauer spectroscopy with a high velocity resolution showed that the best fit of the room temperature Mössbauer spectra of ferritin and Imferon was obtained using a superposition of four and three quadrupole doublets, respectively [11,13,14].…”