"Phenomenon or Process"^^ . . "C0008018"^^ . "Chemotactic Process"^^ . "Chemotactic Process"^^ . "C16422"^^ . . "The characteristic directional movement or orientation of an organism or cell along a chemical concentration gradient either toward or away from the chemical stimulus.NCI" . "ChemotaxisSYNCI" . . "Chemotaxis"^^ . "Chemotactic ProcessPTNCI" .