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(A) Some ‘dark’ neurons in the dentate hilus are SST-immunopositive. Immunofluorescent staining against SST from the 16% O2 experimental group shows several immunopositive cells that are also silver-impregnated on (B) (arrows). (C) Quantitative analysis of SST-immunopositive, ‘dark’ neurons and double-labeled cells in hippocampal regions. Only the hilus contained double-labeled neurons. Scale bars: (A) 100 μm, (B) 100 μm.
