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X-ray diffraction (XRD) patterns of PEG and Spironolactone preparations
a: PEG, b: Spironolactone, c: Physical mixture (1:1 Drug-carrier), d: Solid dispersion (1:1 Drug-carrier), e: Solid dispersion (1:1 Drug-carrier and 1.5% Tween 80), f: Solid dispersion (1:1 Drug-carrier and 1.5% Tween 60)
