Capillary-Tube Chemotaxis Assay (IMAGE)

University of Hawaii at Manoa

Capillary-Tube Chemotaxis Assay

Caption

A tiny glass tube containing a concentrated solution of a chemoattractant (that is, a fatty acid) is placed into a suspension of motile Vibrio fischeri cells. Within a few minutes the bacteria have swum to the tip of the tube, where the concentration of the attractant is highest. The bright area is the cloud of bacteria accumulating around the tip.

Credit

E. Ruby, University of Hawaii / PBRC.

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