..., we analysed both [Ca 2+ ] i and subcellular contractions. Contractile events were assessed by tracking stress-fibre-linked microbeads and measured by atomic force microscopy. Myofibroblasts exhibit periodic (~100 seconds) [Ca 2+ ] i oscillations that control small (~400 nm) and weak (~100 pN...

...Stéphanie Pellegrin; Harry Mellor Animal cell movement is effected through a combination of protrusive and contractile events. Non-muscle cells contain stress fibres – bundles of actomyosin that are the major mediators of cell contraction and that can be compared to the highly organised actomyosin...

.... * Author for correspondence (e-mail: gtranvan@pasteur.fr ) © 2000 by Company of Biologists 2000 Src Shigella flexneri Rho Stress fibre Ezrin The gram-negative bacterium Shigella flexneri is the causative agent of bacillary dysentery. After ingestion, the bacteria progress along...