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Piceatannol blocks LFA-1–dependent migration of a cytotoxic T cell clone. Shown are the percentages of cells that have migrated to the lower well of a Transwell chamber, containing either no chemoattractant or 1 ng/ml SDF-1. The filters were either uncoated or ICAM-1–coated, and in the latter case the assay was performed in the presence or absence of 50 μg/ml piceatannol. Data are averages ± SE of three experiments performed in duplicate.
