求高人帮忙找一篇英文文献。 作者:Park, C., Choi, Y. H., Shin, H. J., Poo, H., Song,J.J., Kim, C. J. & Sung, M. H. 标题:Effect of high-molecular-weight poly-g-glutamic acid from Bacillus subtilis (chungkookjang) on Ca solubility and intestinal adsorption. J. 来源: Microbiol. Biotechnol. 15, 855–858 (2005).