Projection of a HeLa cell expressing a YFP-SC35 fusion protein that localizes to nuclear speckles and in a diffuse nuclear localization. Image stack was acquired using a Deltavision deconvolution micr...

Immunolabeling of endogenous splicing factor SC35 (red) and transfected FP-tagged lamin B receptor. Image stack was acquired using a Deltavision deconvolution microscope.

Transmission electron micrographs of Opossum spermatogonia showing different regions within the nucleolus. One region is more lightly staining and fine textured, the other denser and more coarsely tex...

High voltage TEM image of meiotic newt oocyte nuclei showing transcription on looped lampbrush chromosomes. This micrograph, was recorded at a tilt angle of 50 degrees. The image is grouped with one ...

High voltage TEM image of meiotic newt oocyte nuclei showing transcription on looped lampbrush chromosomes. This micrograph, was recorded at a tilt angle of 40 degrees. The image is grouped with one ...

HeLa cells stably expressing BAC-encoded GFP-labeled snRNP protein U1-70K and imaged witb a PicoQuant MicroTime 200 confocal microscope using an Olympus 60x 1.2NA water immersion objective lens. The ...

HeLa cells stably expressing BAC-encoded GFP-labeled snRNP protein U1-70K and treated with isoginkgetin. The protein localizes to enlarged splicing factor compartments. Cells imaged witb a Leica SP5 ...

Amphibian oocytes have many copies of rRNA genes that are actively transcribed. Newt oocyte nuclei were dissected, allowed to swell in a low ionic strength high pH buffer, centrifuged through a sucros...

Transmission electron micrograph of a cross section through the nucleolus from a Chinese hamster spermatogonium revealing a complex distribution of regions of varying granular textures.

HeLa cells stably expressing BAC-encoded GFP-labeled snRNP protein hPrp8 and imaged witb a Leica SP5 confocal microscope using a 60x 1.4NA HCX Plan Apo objective lens. The hPrp8 is confined to the nu...