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Time course of zinc exchange between 65Zn7-MT-2 and Zn2-Gal4. The experimental data were fitted by a single exponential according to the equation Yt = Y∞[1 − exp(−kt)], with k = 0.0107 min−1 and Y∞ = 3600 cpm. Conditions as described in the legend of Fig. 4.
