The sensitiveness exhibited by small free-swimming organisms, as bacteria, zoöspores of algæ, etc., to chemical substances held in solution. They may be attracted (positive chemotaxis) or repelled (negative chemotaxis).
A response movement by an animal either toward or away from a specific chemical stimulus.
attraction by a chemical stimulus, e.g., phagocytes to microbes
Chemotaxis Movement of bacteria toward or away from certain chemicals in the medium
the movement by a cell or organism toward or away from a chemical stimulus (e.g., a chemokine).
Movement of cell toward a particular substance; movement away from a repellant (Lecture: The Bacterial Cell: Structure, Function, Growth, and Gene Regulation II, 1/29/02)
The movement of a cell or organism in response to a chemical gradient.
the phenomenon of movement of leukocytes caused by a chemical influence.
The movement of a cell toward a higher (or, in some cases, a lower) concentration of a particular chemical.
A behavorial response of cells resulting in movement toward or away from to a chemical stimulus.
directed movement of cells up a gradient of a diffusible molecule
The attraction of phagocytic cells to the source of abnormal chemicals in tissue fluids.
Motile response of a cell or an organism that carries it toward or away from a diffusible chemical.
movement by a cell or organism in reaction to a chemical stimulus
the action by which leukocytes are attracted to injured cells
movement of organisms in response to a chemical gradient
The movement of an organism in response to a chemical stimulus.
Movement of a cell toward or away from a chemical substance
Movement of cells or organisms toward or away from chemical stimuli.
Moving from one place to another because of a chemical signal. An example of chemotaxis is a white blood cell moving to the site of an infection in response to immune system hormones produced near the infection.
Movement of a cell toward of away from a chemical stimulus.
Taxis or movement in response to chemical stimulation.
(kem-oh-TACK-sis) movement or response of cells to chemicals
The ability of an organism, in this case bacteria, to detect and move toward a particular chemical. Selected bacteria exhibit positive chemotaxis and move toward higher levels of biochemical food sources. This ability is particularly advantageous when the goal is the efficient digestion of organic materials.
Migration of cells along a concentration gradient of an attractant.
Directional movement (migration) of biological cells or organisms in response to concentration gradients of chemicals, whereby the cells are attracted or repelled by substances exhibiting chemical properties.
(KEE moh TACK sis): Movement in response to chemical stimulation.
The attraction of phagocytes to the site of infection by components of complement.
Increased directional migration of cells particularly in response to concentration gradients of certain chemotactic factors.
Chemotaxis is a kind of taxis, in which bodily cells, bacteria, and other single-cell or multicellular organisms direct their movements according to certain chemicals in their environment. This is important for bacteria to find food (for example, glucose) by swimming towards the highest concentration of food molecules, or to flee from poisons (for example, phenol). In multicellular organisms, chemotaxis is critical to development as well as normal function.