The nucleolus during mammary epithelial differentiation and early mammary tumorigenesis. Proliferating 2D cultures of MCF-10.B2 cells at day 0 were stained with ANA-N antibody to detect nucleoli (gree...

The nucleolus during mammary epithelial differentiation and early mammary tumorigenesis. Quiescent 2D cultures of MCF-10.B2 cells were stained with ANA-N antibody to detect nucleoli (green) and count...

Immunofluorescence image of HeLa cell expressing a fusion protein of GFP-polypyrimidine tract binding protein showing the localization of the perinucleolar compartment (green area) at the periphery of...

We examined the structural organization of cytoskeletal components and membrane systems in neurons of well preserved biopsy material from Alzheimer’s disease (AD). Information was obtained from thin...

We examined the structural organization of cytoskeletal components and membrane systems in neurons of well preserved biopsy material from Alzheimer’s disease (AD). Information was obtained from thin...

Transmission electron micrograph showing the extensive accumulation of darkly stained heterochromatin at the nuclear periphery typical of many differentiated cells. Heterochromatin is excluded from re...

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...

Transmission electron micrograph showing the highly compact nucleolus in the salamander hepatocyte. A finer textured central region is surrounded by a coarser region.

Transmission electron micrograph of Leydig cell nucleus from the domestic boar contains a region (arrow) thought to represent the single X chromosome which is largely heterochromatic. The chromosome i...

Single image from a serial section electron microscopic reconstruction of the cell body of a cortical pyramidal neuron from a biopsy sample obtained from the cortex of a patient with Alzheimer's dise...