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Abstract
The motion of chemotactically different Escherichia coli C600, cheB287, and AW405 cells was studied using
a column packed with silica gel. The model chemotaxis of bacteria in porous media seems to be adequate to
natural bacterial chemotaxis in soils. The porous structure of silica gel prevents interfering convective flows.
Silica gel columns make it possible to separate bacterial cells differing in motility and chemotaxis. Relevant
physical phenomena are discussed. The concept of fast and slow chemotaxis is considered. |
