Bexarotene was obtained from Sigma-Aldrich (St. Louis, MO) at the highest purity available. Colloid formation was performed by first dissolving the Bexarotene power in 10 mM solution stocks of 100% DMSO, before a serial dilution in 20 mM NaP (pH 8.0) and 0.2 mM EDTA to 100 μM in 1% (v/v) DMSO (38 (link)).
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