IBSP and thyroid gland undifferentiated (anaplastic) carcinoma: To ascertain the relevance of resveratrol-upregulated CRABP2 expression with DNA demethylation, the sample DNAs were isolated from medulloblastoma UW228-2 and anaplastic thyroid cancer THJ-11T cells before and after resveratrol treatment and subjected to BSP PCR and the sequencing of BSP products.