Table 4.

Estimated values of model parameters (Monte Carlo approach)

	P1S1, mL/min	P2S2, mL/min	Kpgp, mL/min	k̄2, mL/min	k−2, min−1	Kd3	Δψm, mV
R6G	48.04 ± 7.05	0.683 ± 0.154	10.80 ± 5.38	13.93 ± 2.56	0.121 ± 0.013	0.031 ± 0.009	−144.26 ± 23.93
R6G + verapamil	49.69 ± 8.78	1.123 ± 0.291	0	7.30 ± 0.73	0.170 ± 0.019	0.016 ± 0.004	−130.70 ± 14.67

Values are mean ± SD estimated values of model parameters (Monte Carlo approach): 100 different fits to the mean data in the absence or presence of verapamil with the initial values of model parameters equal to the mean values of the fits to individual experiments (Table 3) ± a uniformly distributed random value within ±30% of this mean error. R6G, rhodamine 6G.