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Abstract
The rapid induction of the sucrase-isomaltase (SI) gene in rat jejunum from the onset to final period of weaning was associated with increases of the acetylation of histones H3 and H4 on the promoter/transcriptional region of the gene, suggesting that an abrupt jejunal induction of histone acetylation changes on the SI gene during this period may be concerned with the expression of the gene.