Age‐related amyloid deposition in APPPS1‐21 mice.

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Age‐related amyloid deposition in APPPS1‐21 mice. Age‐related amyloid deposition in APPPS1‐21 mice. (A) Aβ immunostaining in the frontal cortex of 1‐, 2‐, 4‐ and 8‐month (mo)‐old female transgenic mice. Note the early onset of mostly small and compact amyloid deposits at 2 months. (Another batch of mice was analysed at 6 weeks of age and amyloid deposits were already present at this age; results are not shown.) At 8 months of age, amyloid deposits cover virtually the entire neocortex, are larger in size and are surrounded by diffuse amyloid. (B) In the hippocampus, amyloid deposits develop later. Similar to the neocortex, initial deposits are small and compact. Scale bars, 200 μm. (C) Stereological analysis of amyloid load (%) showed a significant increase from 1 to 8 months of age for both neocortex (ctx) and hippocampus (hpx), P<0.001, with an earlier and greater amyloid deposition in the neocortex (five female mice/group). S.e.m. is shown. Aβ, amyloid β. Rebecca Radde et al. EMBO Rep. 2006;7:940-946 © as stated in the article, figure or figure legend