1. Physics of Living Systems
  2. Microbiology and Infectious Disease
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Phototaxis: Life in focus

  1. Carol Dieckmann  Is a corresponding author
  2. Telsa Mittelmeier
  1. University of Arizona, United States
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Cite this article as: eLife 2016;5:e14169 doi: 10.7554/eLife.14169
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Single-celled photosynthetic bacteria acting as lenses.

Schuergers et al. illuminated Synechocystis cells on an agar surface with a light source from the direction marked with a red arrow. Each cell, acting as a lens, focused the light on the rear edge of the cell (white arrows), and moved toward the light. A strong laser light from above (red circle in center), caused cells entering the small laser-illuminated area on the agar to reverse direction. (See figure 4 in Schuergers et al., 2016 for full details).

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