Under the condition of decreased blood calcium, cartilage-derived factor (CDF) evidently inhibited cartilage GAG production.

在血钙降低的条件下，软骨衍生因子(CDF)对软骨糖胺多糖的合成代谢有明显的抑制作用。

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Objective:To determine the role of vascular endothelial growth factor(VEGF)and pigment epithelium derived factor(PEDF)in vascularization of the developing retina.

目的：研究视网膜发育过程中血管内皮生长因子（VEGF）和色素上皮衍生因子（PEDF）所起的调节作用及其机制。

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Vascular endothelial growth factor and pigment epithelium-derived factor are most enhancing factor and strongest inhibitory factor of corneal neovascularization(CNV)at present.

血管内皮生长因子和色素上皮细胞衍生因子是目前发现的作用最强的角膜新生血管形成促进因子和抑制因子。

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Instead, mix models only grossly estimate this value with an externally derived factor of 2X the immediate effect for the longer-term effect.

FORBES: The Downside Of Marketing Mix Models Is There's No Upside For CMOs

In 2004 biotech firm Amgen began trials of a Parkinson's drug called glial cell line-derived neurotrophic factor, or GDNF.

FORBES: Magazine Article

Research indicates that a diet high in added sugar reduces the production of a brain chemical known as brain-derived neurotrophic factor (BDNF).

FORBES: What Eating Too Much Sugar Does to Your Brain