Retinoid: Natural compounds from vitamin A, retinoids treat brown spots and superficial wrinkles.

类维生素A：来自维生素A的天然化合物，类维生素A治疗棕色斑点和肤浅的皱纹。

Methods: Retinoid imaging agents are synthesized and labeled with near-infrared dye for in vitro cell binding studies on human osteosarcoma cell lines.

方法：采用化学合成的方法得到近红外标记的维甲酸类造影剂，并进行骨肉瘤细胞的体外结合试验；

Agents that induce cell differentiation have been widely used in tumor research and achieved progress in the prevention and treatment of tumor. among them, retinoid drug shows confirmative effect.

分化诱导剂被广泛应用于肿瘤的研究，在肿瘤的预防和治疗方面取得一定的进展，其中以维甲酸类药物效果肯定。