FRANCIS LEROY & NATHAN PETIT, BIOCOSMOS / SCIENCE PHOTO LIBRARY FRANCIS LEROY & NATHAN PETIT, BIOCOSMOS / SCIENCE PHOTO LIBRARY
Bacterial infection, actin nucleation. Animation showing how the bacteria Listeria monocystogenes uses the cell's cytoskeleton to propel itself inside and between infected cells. This method is known as actin nucleation. Actin monomers (yellow) are induced to polymerase rapidly on the bacterial cell surface (red), generating an actin comet tail. Moving between cells (towards end of animation) occurs in such a way that the bacteria does not come into contact with the extracellular environment. This means it is not exposed the immune system of the infected organism. For this animation without labels, see K004/2058.
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