not-yet-known not-yet-known not-yet-known unknown Fig. 5 Biosafety evaluation of magnetothermal neurostimulation in vivo. (a) H&E staining (top) and Nissl staining (bottom) images of the CeA regions of mice in the control, FVIO (0.05 μg) and SPIO (0.80 μg) groups after exposure to the same AMF. (b) Immunohistochemical analysis and measured expression levels of the inflammatory factors (c) IL-1β, (d) IL-6, and (e) TNF-α in the CeA regions of mice in different groups. *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001; ns, not significant.