Figure 4. The effect of NCDC on Ca²⁺ oscillations.

A, before drug addition oscillations were occurring at a frequency of about 3 min⁻¹. In the presence of 100 μmN,N-diphenylcarbamate (NCDC), the amplitude of oscillations was much reduced, but they continued but at the slightly slower frequency of 2 min⁻¹. The summarized results (B) showed a decrease in both frequency and amplitude, but there was little effect on basal Ca²⁺ levels.