Transmission electron micrograph of a dividing myelocyte from the slender salamander Batrachoseps attenuatus showing mitotic chromosomes at late prophase.

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 longitudinal section through mouse spermatozoon showing characteristic hooked shape of sperm head and extremely compact DNA-protamine in the nucleus. Figure 117 fr...

At cyst formation in the 'giant' unicellular green alga Acetabularia, each cyst contains a single nucleus which subsequently undergoes several rounds of mitosis prior to gamete formation. Initially t...

At cyst formation in the 'giant' unicellular green alga Acetabularia, each cyst contains a single nucleus which subsequently undergoes several rounds of mitosis prior to gamete formation. Initially t...

Transmission electron micrograph of a section of a human polymorphonuclear neutrophil from circulating blood. Neutrophil nuclei are often lobed, as seen in the electron micrograph and light micrograph...

Cells of the unicellular photosynthetic alga Chlamydomonas reinhardtii were fixed, sectioned, and examined by transmission electron microscopy. In this section of the ac-5 mutant grown phototropically...

Transmission electron micrograph of a thin section of the liver of a 1-day old rat showing a grazing view of rough endoplasmic reticulum (RER, sometimes termed granular endoplasmic reticulum. The 'rou...

Transmission electron micrograph of glutaraldehyde fixed pancreatic acinar cell showing the characteristic features of nuclear chromatin with this preparative method. Darkly staining heterochromatin (...

Transmission electron micrographs showing chromosomes in dividing spermatogonia during metaphase in tissue from ram testis (upper panel) and as they begin to separate during early anaphase in tissue f...