Figure 4.

ECIS/taxis assessment of the chemotactic response by WBC 264-9C cells. Cell wells were loaded and guinea pig serum (1:2 dilution), PBS, or 20 μM metallothionein was added to the chemoattractant wells. Serum complement is activated by exposure to agarose to generate a control chemotactic gradient. Inset: A 3 hours window of data on an expanded scale showing the arrival of cells on the electrode.