Thick microtubule bundles are organized around the periphery of each stem cell in human embryonic stem cell colonies. Human embryonic fibroblasts were grown on a layer of mouse embryonic fibroblasts which provide nutrients and help maintain pluripotency of the colonies. The sample has been labeled with an antibody to tubulin using standard protocols for immunolabeling.
Images were deconvolved using Nikon Elements software.
Author: Sabrina Lin
Source: The Cell: An Image Library