Fig. 6From: Antibody-conjugated gold nanoparticles as nanotransducers for second near-infrared photo-stimulation of neurons in ratsIn vivo NIR neural stimulation. a Procedures for in vivo neural stimulation. b H&E and c TUNEL staining of hippocampal slices after treated with Au@PDA-PEG-Ab and NIR-II laser irradiation. d C-fos staining of hippocampal slices after Au nanoparticles and NIR-II laser irradiation (1.0Â W/cm2)Back to article page