Kumasaka T, Nishi N, Yaoi Y, Kido Y, Saito M, Okayasu I, Shimizu K, Hatakeyama S, Sawano S, Kokubu K
Am J Obstet Gynecol. 1979 May 1;134(1):39-44. doi: 10.1016/0002-9378(79)90793-2.
With the use of the radioimmunoassay for growth hormone--releasing inhibiting factor (GIF), it was found that measurable amounts of GIF-like substance existed in the chorionic villi and decidua of pregnant women. The indirect immunofluorescent method revealed that the higher intensity of GIF-like immunofluorescence was presented in cytotrophoblasts rather than in syncytiotrophoblasts of the villi and in stromal cells of the decidua.
利用放射免疫分析法检测生长抑素释放抑制因子（GIF），发现孕妇的绒毛膜绒毛和蜕膜中存在可测量的类GIF物质。间接免疫荧光法显示，绒毛的细胞滋养层而非合体滋养层以及蜕膜的基质细胞中，类GIF免疫荧光强度更高。
