Takeshi, Hirano: "CD9 is expressed in extravillous trophoblasts in association with integrin α3 and integrin α5" Molecular Human Reproduction. 5. 162-167 (1999)

Takeshi, Hirano：“CD9 在绒毛外滋养细胞中表达，与整合素 α3 和整合素 α5 相关”《分子人类生殖》(Molecular Human Reproductive) 5. 162-167 (1999)。