Background and objective: All-trans retinoic acid(ATRA), a mainactive metabolite of retinol (Vitamin A),participate in the regulation ofproliferation differentiation and apoptosis of a variety of cell types.

• 研究背景与目的：全反式视黄酸（all-trans retinoicacid，ATRA）是视黄醇（即维生素A）在体内主要的活性代谢产物，参与调控机体多种细胞的增殖、分化及凋亡。