Neural stem cells can be induced to differentiate into neuronic cells by atra , vd3 and dex , and into astrocytes by bmp - 2 ; atra and bmp - 2 antagonize each other . 3 神经干细胞能被atra 、 vd3和dex诱导形成神经元样细胞，被bmp一2诱导形成星形胶质细胞， atra与bmp一2作用相互拮抗
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The experimental result indicates that the neuronic learning by making input variable fuzzy and self - adjusting algorithm have strong self - adjustment , quick response and good robustness for the pressure control of metallurgical valve 试验结果表明，这种通过对输入变量模糊化的神经元学习和在线自调整算法，对其冶金阀门的压力控制具有很强的自适应性，且响应程度快、鲁棒性好。
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2 . in the process of differentiating , if depriving of bfgf , neural stem cells died quickly ; bmp - 2 , atra and r * v * d affected the differentiation of neural stem cells significantly ; atra induced neural stem cells to differentiate into neuronic cells , vd3 and dex also induced neural stem cells to differentiate into neuronic cells , but not as effective as atra ; neural stem cells treated by bmp - 2 differentiated into astrocytes partially ; atra and bmp - 2 antagonized each other in their effects on neural stem cells differentiation . 3 细胞分化中如果缺少bfgf ，则分化细胞快速死亡； bmp - 2 、 atra和r * v * d ( atra + vd3 + dex的简称，余类推)对神经干细胞分化具明显诱导作用； atra 、 vd3 、 dex诱导神经干细胞形成神经元样细胞，但后两者效果不如atra ； bmp - 2诱导神经干细胞形成少量星形胶质细胞； atra与bmp - 2在诱导神经干细胞分化过程中作用相互拮抗。
