目的：研究、探讨血小板源生长因子和肝素对培养的人主动脉平滑肌细胞表型转变调节作用，及其对平滑肌细胞胶原蛋白合成的影响。

Objective: to investigate the effect of platelet derived growth factor (PDGF) and heparin on regulating the transformation of phenotype and collagen synthesis in aorta smooth muscle cell (SMC).

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观察血小板源性生长因子（PDGF）对肺纤维母细胞增殖、胶原合成的影响。

PURPOSE The study was carried to observe the effect of platelet-drived growth factor(PDGF) on the cellular proliferation and synthesis of procollagen of rat pulmonary fibroblasts (PFbs).

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目的研究血小板源生长因子(PDGF)对肾小球系膜细胞(MC)表型转化的影响，并探讨丝裂素活化蛋白激酶(MAPK)信号转导途径在其作用中的调控机制。

Objective to investigate effects of PDGF on phenotypic change of glomerular mesangial cells (MC), and study intracellular mechanisms through mitogen-activated - protein kinase (MAPK) pathways.

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