Z-series image of mouse ES cells carrying an alpha-globin BAC transgene array (clone 7d) transduced with a lentivirus containing an expression cassette for EGFP-LacI. EGFP-LacI binding (green) to the...

A grazing section through the edge of the nuclear envelope. This illustrates nuclear envelope pores in face view. Polysomes, chains of ribosomes, are bound to the outer membrane of the nuclear envelop...

In one experiment in which electric shock was applied to Paramecium cells to trigger trichocyst discharge the macronucleus in one cell was observed to undergo morphological changes of two types. First...

Transmission electron micrograph of stacked annulate lamellae from the oocyte of the sea urchin Arbacia. Annulate lamellae consist of sheets of membrane containing closely packed structures resemblin...

High resolution image of the macronucleus of Coleps hirtus. Heterochromatin and nucleoli are seen as smaller and larger stained bodies, respectively, in the macronucleus. Many nuclear pores exist in t...

High resolution of a daughter micronucleus in anaphase of a dividing cell of Didinium nasutum. The chromosomes are compacted into one large heterochromatic body. Remnants of the mitotic division spind...

The image shows a nucleus extracted from the brain of an old (29 month) rat and immuno-stained for tubulin (green)and nuclear pore complexes (red). DNA was stained with DAPI (blue). The intra-nuclear...

Wild type Trypanosoma brucei cells (Strain 427) were high pressure frozen and visualized through transmission electron microscopy (TEM). The images show the nucleus of the cells and the black arrow ...

Wild type Trypanosoma brucei cells (Strain 427) were high pressure frozen and visualized through transmission electron microscopy (TEM). The images show the nucleus of the cells and the black arrow ...

Wild type Trypanosoma brucei cells (Strain 427) were high pressure frozen and visualized through transmission electron microscopy (TEM). The images show the nucleus of the cells and the black arrow ...