Experiments: basic research on living systems, not technology.
Also: E. coli swimming, run and tumble
Bacteria steer toward food by swimming in runs and randomly tumbling, a simple strategy for navigation.
Only what the cited papers report.
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Berg and Brown analysed E. coli chemotaxis by tracking individual bacteria in three dimensions.
As reported in: BERG, BROWN (1972). Chemotaxis in Escherichia coli analysed by Three-dimensional Tracking. Nature. doi:10.1038/239500a0
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