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pattern formation
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from a homogeneous state to structure
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morning glory
regular spatial patterns
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fractal patterns
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Benard Convection
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BZ reaction
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Orientation maps in the visual cortex
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In toto embryogenesis
Imaging setup:• Stacks: 4x200 planes, spacing 1um• Imaging time for 4 views: <10seconds• Repeated every 30seconds• Total imaging time: 20hrs• Total amount of data: 8TB• 4 of 4 embryos hatched as larvae
speed: about 50-200x fasterlight exposure: reduction of 180um/2um = 90det. efficiency: between 60-95% with up to 16bit
Confocal comparison
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Hox Genes Regulate Digit Patterning by Controlling the Wavelength of a Turing-Type MechanismRushikesh Sheth, Luciano Marcon, M. Félix Bastida, Marisa Junco, Laura Quintana, Randall Dahn, Marie Kmita, James Sharpe, and Maria A. RosScience 14 December 2012: 1476-1480.
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nutrient
motility
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1912 – 1954
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activation inhibition
diffusion
the mechanism
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mechanisms
• local excitation global inhibition
• diffusion of a bistable system
• Turing mechanism
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mechanisms
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two state models
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continuous states
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local excitation global inhibition
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diffusion driven mechanisms
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programming
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diffusion driven mechanisms