Figure S1.

Characterization of pH-sensitive WGA conjugates, related to Fig. 2 . (A) Fluorescence-pH plot of WGA-pHRho in solution; excitation wavelength, 550 nm. a.u., arbitrary units. (B) ΔF/F0-I plot of WGA-pHRho (red), homemade WGA-fluorescein (dark green), and WGA-fluorescein from Vector Laboratories (light green).

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