Image shows a z-series of a mouse ES cell carrying a multi-copy alpha-globin BAC transgene array. Relative distribution of the BAC sequences, identified by DNA FISH (green) using the entire BAC as pr...

Z-series images of mouse ES cells carrying DHFR BAC transgene array (clone 36) and differentiated into fibroblast-like cells. 3D FISH shows increase in number of lac operator foci (green) and change ...

Image shows a z-series of a mouse ES cell carrying an alpha-globin BAC transgene array (clone 1c) hybridized with probes against the lac operator repeat (green) and the entire alpha-globin BAC sequenc...

Nucleated erythrocytes from the newt Notopthahmus viridescens were spread on water, the dispersed chromatin picked up on carbon-formvar grids, fixed with paraformaldehye, critical point dried and shad...

Nucleated erythrocytes from chicken were spread on water, the dispersed chromatin picked up on carbon-formvar grids, fixed with paraformaldehye, critical point dried and shadowed with platinum. Image...

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 ...

chicken erythrocyte nuclei were allowed to decondense in a low salt high pH buffer, fixed with HCOH, centrifuged onto a carbon coated EM grid, and stained with uranyl acetate. (Spreading technique of ...

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...

Transmission electron micrograph of unstained cryo-section of a sperm cell of the starfish Patiria miniata. Echinoderm sperm nuclei are unusual in that chromatin fibers are clearly seen, allowing the...

X-ray analysis shows that the nucleated erythrocytes of the amphibian Necturus maculosus (Mud Puppy) contains more ordered chromatin than most nuclei. Here, chromatin fibers were isolated from N. mac...