Dendraster excentricus (sand dollar)

What is it:

Zygotes fixed at successive points during first cleavage, separate images arranged into a montage

Points of interest:

Microtubules, the mitotic apparatus, growth of the aster, chromosome segregation, cytokinesis

What’s glowing:

Antibody to tubulin (microtubules: orange) and propidium iodide (DNA stain labels chromosomes: blue)


BioRad Radiance; 60x; single optical sections.  These cells, when live and before division, were about 125 microns in diameter.

Picture taken by:

George von Dassow

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