Echinoderm sperm nuclei are unusual in that chromatin fibers are clearly seen, allowing their diameter to be accurately determined. Here, sperm from the starfish P. miniata were treated to remove the ...

Transmission electron micrographs. The upper panel shows a section through a frog nucleated erythrocyte. The nucleus is largely filled with heterochromatin which appears to have a fibro-granular stru...

Light microscopy of the same field of cells showing the phase contrast image of a monolayer of K2 Chinese Hamster Ovary (CHO)cells (upper panel), and in the lower panel, immunofluorescence staining us...

Transmission electron micrograph showing the nucleus of a mouse cardiac tissue with nucleolus. At the center of the image is a large structure called the nucleus which is a membrane-limited compartmen...

This transmission electron micrograph of a section through a late orthochromatic erythroblast (normoblast) from human bone marrow shows shallow depressions along the membrane surface, indicated by arr...

TEM image of epon section of a freeze-substituted mouse retina illustrating the unusual distribution of heterochromatin in rod receptor nuclei where the compact heterochromatin is centrally located. C...

Mouse 3T3 fibroblast shown in phase contrast (left) and immuno-stained for the nucleolar protein nucleostemin (right, green).

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 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...

Single slice confocal images representing one optical slice of a cell stained for the Human Protein Atlas (HPA) antibody HPA003230 (shown in green). HPA003230 is a polyclonal antibody against PDIA3 ...