A homologue of platelet-derived growth factor produced by rat alveolar macrophages.


Rat alveolar macrophages secrete a growth factor that renders rat lung fibroblasts competent to initiate DNA synthesis in vitro in the presence of platelet-poor plasma. This biological activity resembles that of platelet-derived growth factor (PDGF). After separation from putative associated binding proteins by chromatography under acidic conditions, the… (More)


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