@article{1997622, title={Human cDNA Encoding a Novel TGF-β Superfamily Protein Highly Expressed in Placenta}, author={Midori Yokoyama-Kobayashi and Mihoro Saeki and Shingo Sekine and Seishi Kato}, journal={The Journal of Biochemistry}, volume={122}, number={3}, pages={622-626}, year={1997}, doi={} }