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taxis |
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taxisIn botany and microbiology, the movement of a single cell, such as a bacterium, protozoan, single-celled alga, or gamete, in response to an external stimulus. A movement directed towards the stimulus is described as positive taxis, and away from it as negative taxis. The alga Chlamydomonas, for example, demonstrates positive phototaxis by swimming towards a light source to increase the rate of photosynthesis. Chemotaxis is a response to a chemical stimulus, as seen in many bacteria that move towards higher concentrations of nutrients. |
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| Studies on galvanotaxis of human neutrophilic leukocytes and methods of its measurement. Some of these findings are in turn supported by in vitro studies in which isolated epidermal cells, cell clusters, and cell sheets demonstrated galvanotaxis in migrating toward the cathode. |
Galvanotaxis
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