chemotaksi
Chemotaksi, also known as chemotaxis, is the movement of an organism or cell in response to a chemical gradient, typically toward higher concentrations of a nutrient or away from a toxin. It occurs in bacteria and archaea, as well as in many eukaryotic cells such as neutrophils and Dictyostelium discoideum, and it plays a critical role in development, immunity, and infection.
In bacteria such as Escherichia coli, chemotaksi is mediated by chemoreceptors that detect attractants or repellents.
In eukaryotes, chemotaksi involves receptors such as G protein–coupled receptors or receptor tyrosine kinases that sense
Chemotaksi can be positive (toward attractants) or negative (away from repellents). Studies often employ microfluidic devices
Significance includes roles in bacterial colonization, immune cell trafficking, wound healing, and cancer metastasis. Advances in