Peculiar magnetic observations in pathological human liver

DC magnetic measurements confirm presence of (i) diamagnetic, (ii) ferri-magnetic (probably magnetite) and (iii) paramagnetic components in human liver tissues obtained from a normal person and two patients with hematological malignancies. The main observation is that patients' liver tissues show a pronounced magnetic peak at 54(1)K in their zero-field-cooled (ZFC) branches; its origin is not known. One sample shows unusual magnetic features: (i) this peak is irreversible and totally suppressed in the second ZFC sweep, (ii) around the peak position the field-cooled (FC) curve crosses the ZFC one (ZFC>FC). The two phenomena are related to each other. •DC magnetic measurements of normal human and patients' liver tissues.•The presence of diamagnetic, ferrimagnetic and paramagnetic components in human liver.•Unusual magnetic features in mantle cell lymphoma liver.