Patient-derived glioma stem cells treated with a PLK1 (serine/threonine-protein kinase) inhibitor and stained for nuclei (blue), alpha-tubulin (green), phospho-histone H3 (red).

Fluorescence micrograph of a neuron regenerating in culture. Honorable Mention, 2006 Olympus BioScapes Digital Imaging Competition.

4D data set of yolk syncytial layer nuclear movements. Movie shows z-series stacks sequentially through time. Numbers label individual nuclei so they can be tracked in 3D space at each time point. Vi...

Sand dollar embryos expressing GFP-H2B going thru stages of mitosis.

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

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

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

This cross section shows a human fetal testis. Numerous seminiferous tubules appear within a lobe of the testis. It has not been treated with an antibody but is autofluorescent and therefore appears b...

Image shows a metaphase spread revealing the 46 human chromosomes (blue). Telomeres have been labeled using PNA-FISH and appear as pale dots at the ends of each chromatid.

Confocal micrograph of a stimulated mast cell that has just exploded releasing numerous histamine granules. The remains of the cell are seen towards the lower left, still containing a number of granul...