Smc3fl/+ BM nucleolar 3D reconstruction. Nucleolar stain of Smc3fl/+ BM reveals a solitary intranuclear nucleolus. ACK-lysed BM was stained with TOTAL-NUCLEAR-ID fluorescent reagents, allowing simultaneous staining of both the nucleoli (green) and total nucleus (red). Images were taken using a TCS SP5 confocal microscope (Leica) with a 63× 1.4 NA oil objective and deconvolved using AutoDeblur (Media Cybernetics). Three-dimensional rendering was performed using Imaris.