Modified Perl’s staining was performed on 14 μm sagittal sections of paraformaldehyde fixed brain as described in20 (link). Staining at different emission wavelength was evaluated by the Nuance® FX multiplex biomarker imaging system (PerkinElmer) in the choroid plexus of the mice. A semi-quantitative analysis of iron deposition normalized for cell staining was performed using ImageJ software (National Institute of Health, http://rsb.info.nih.gov/ij) as in ref. 20 (link).
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