Results The syncytiotrophoblast,cytotrophoblast and stromal cells were all appeared DHEA immunoreactivity.The immunoreactivematerial was distributed in cytoplasm with immunonegative nucleus.

• 结果人胎盘两层滋养层细胞和基质细胞均呈DHEA免疫反应性，反应物质分布于胞质，胞核无免疫反应。