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SUMMARY:Are confluent cell layers extensile or contractile? - Julia Yeoman
 s\, Department of Physics\, University of Oxford
DTSTART:20211022T150000Z
DTEND:20211022T160000Z
UID:TALK162697@talks.cam.ac.uk
CONTACT:Prof. Jerome Neufeld
DESCRIPTION:A lot is understood about the ways in which single cells move 
 over a surface\, but the motion of confluent layers of epithelial cells\, 
 which are coupled through strong intercellular junctions\, remains puzzlin
 g. \n\nThe cells in epithelial layers can be jammed in a glass-like state\
 , they can flock\, or they can show active turbulent-like motility with ch
 aotic flows and motile topological defects. Active turbulence characterise
 s active nematics\, and we have been trying to understand why cells that a
 re\, on average\, isotropic can show nematic properties. Moreover\, it is 
 surprising that single cells are contractile\, whereas the direction of mo
 tion of topological defects in many confluent cell layers suggests that th
 e layers are behaving as an extensile material. 
LOCATION:MR2\, Centre for Mathematical Sciences\, Wilberforce Road\, Cambr
 idge
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