Fig. 7. The relationship between [CaCl2] and (A ) force or (B ) F340:F380in the presence of 40 mm KCl, according to the protocol indicated in figure 4. Closed circles indicate values measured during the initial exposure to CaCl2, open circles indicate values measured in the presence of 2 mm hexanol, and gray circles indicate values after washout of hexanol. Values are mean ± SD, expressed as a percentage of the initial response to 0.8 mm CaCl2(n = 5).