Yolk syncytial layer cell nuclei exhibit convergence and extension behaviors during late gastrulation. Video made available by Mark Cooper through Zebrafish - The Living Laboratory.

Human umbilical vein endothelial cells stained initially for nuclei with DAPI (blue) and for vascular endothelial cadherin (red).

Projection of a HeLa cell expressing a YFP-SC35 fusion protein that localizes to nuclear speckles and in a diffuse nuclear localization. Image stack was acquired using a Deltavision deconvolution micr...

A polymorphic immune cell (red) glides over two spherical V12Ras-transformed mucus-secreting cells (green, possible tumor precursors) in a live three day old zebrafish embryo. This is one of four imag...

Molecules designed to block the expanded CAG repeats characteristic of Huntington's disease fluoresce blue in these cultured cells and prevent the expression of the mutant proteins that cause the di...

Two interphase cells with immunofluorescence labeling of actin filaments (purple), microtubules (yellow), and nuclei (green). This image won first place in the Nikon 2003 Small World photo competition...

Star-like colonial diatom imaged with fluorescence microscopy. Green indicates newly depositing silica, red is chlorophyll. Tenth Prize, 2008 Olympus BioScapes Digital Imaging Competition®.

Fluorescent image of serum starved fibroblasts created from four images stitched together. Image shows the microtubules (green) and nucleus (red). Ninth Prize, 2007 Olympus BioScapes Digital Imaging ...

Fluorescence micrograph of young sporangia, an enclosure in which spores are formed, of slime mold Arcyria stipata. Honorable Mention, 2011 Olympus BioScapes Digital Imaging Competition®.

Fluorescent image of the sporangium, an enclosure in which spores are formed, of the slime mold Craterium minutum. Honorable Mention, 2011 Olympus BioScapes Digital Imaging Competition®.