This Drosophila melanogaster early embryo (cycles 10-12) was injected with a fluorescent protein containing a nuclear localization signal (GFP-NLS). Proteins that contain a NLS are recognized by impor...

Transmission electron micrograph of a thin section of the nucleus of a normal HeLa cell showing a tangential view of the nuclear envelope with nuclear pores. From a study of the role of the nuclear po...

Transmission electron micrograph of a thin section of the nucleus of a HeLa cell with mutant ALADIN. This grazing section of the nucleus shows en face views of nuclear pores which appear to have a no...

Transmission electron micrograph of a thin section of the nucleus of a normal HeLa cell showing detail of a cross section of a nuclear pore - from a study of the role of the nuclear porin ALADIN. Oth...

Transmission electron micrograph of the dense fibrous nuclear lamina (here labeled 'nuclear sheath')closely adpressed to the inner membrane of the nuclear envelope(arrow)in an intestinal epithelial ce...

Transmission electron micrograph of rat liver cell showing a grazing section through the nuclear envelope and illustrating the high density of nuclear pores in cells from a 1 day old animal. The cytop...

Transmission electron micrograph illustrating the unusually prominent fibrous nuclear lamina (arrows) seen in many invertebrates such as this leech ganglion cell. From Fawcett (1966) Am J. Anat. 119:...

Transmission electron micrograph of a thin section of the nucleus of a HeLa cell expressing a mutant of the nuclear porin ALADIN. The nuclear envelope ultrastructure is not affected by the mutation. ...

Transmission electron micrograph of a bone marrow orthochromatic erythroblast from guinea pig showing terminal differentiation in erythrocyte formation. Accompanying the cessation of most transcriptio...

HeLa cells were processed for indirect immunofluorescence with antibodies to two nuclear pore components, ELYS (embryonic large protein derived from yolk sac) and mAb414 against the FG nucleoporins. B...