pigment epithelium-derived factor 色素上皮衍生因子 ; 色素上皮细胞衍生因子 ; 色素上皮源性因子
stromal-derived factor 基质细胞衍生因子 ; 基质源性因子
stromal-derived factor-1 基质细胞衍生因子 ; 观察外源性基质细胞衍生因子
stromal cell derived factor 基质细胞衍生因子
stromal cell-derived factor-1 基质细胞衍生因子
stromal cell-derived factor 基质细胞衍生因子 ; 基质细胞来源的因子
brain-derived neurotrophic factor 脑源性神经营养因子 ; 脑源性神经生长因子
Derived factor demand 引伸性的要素需求
Pancreatic derived factor 胰腺衍生因子
He found that rats that exercise on a treadmill have raised levels of brain-derived neurotrophic factor coursing through their brains.
他发现，在跑步机上锻炼的老鼠，其大脑中流过的脑源性神经营养因子水平有所提高。
They discovered that animals living in the enriched environment had higher levels of a protein called brain-derived neurotrophic factor (BDNF).
他们发现生活在复杂环境下的小白鼠有一种名叫脑源性神经营养因子（BDNF）的蛋白质水平较高。
But when they were given a drug called brain-derived neurotrophic factor, or BDNF, they lost their fear.
但是当给他们使用一种含有脑源性神经营养因子的药物后，恐惧消失了。
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