Immuno labelling of core histone H3.

<p>(A) DAPI staining of an ultra-thin cryo-section (B) Core histone H3 labelling detected by Alexa Fluor 488. (C) Merged image. (D) Overall view of the ultra-thin immunogold labelled section. (E) Enlarged region showing the uniform labelling of the section. (F) Schematic representation of the H3-specific labelling. Bar represents 1 µm in D and 0.5 µm in E.