So I use behavioral explanation to explain the BM effect: the BM effect is only because market overreaction to intangible information.

从行为金融方向解释，认为账面市值比效应是市场对账面市值比指标中包含的无形信息过度反应的结果。

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Objective To define in vitro whether bone marrow mononuclear cells (BM MNC) secrete vascular endothelial growth factor (VEGF) and to evaluate the effect of BM MNC on endothelial cell proliferation.

目的：探讨体外培养骨髓细胞分泌促血管生长因子的能力及培养上清对内皮细胞增殖的影响。

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