Related Experiment Video
Updated: Aug 9, 2026

Purification of HLA-G+ Extravillous Trophoblasts from Human Term Placental Tissues for Phenotyping and Functional Analysis
Published on: March 13, 2026
Prompt diagnosis of ectopic pregnancy with the human chorionic gonadotropin test using exuded extract from
Eiji Ryo1, Sachiyo Yokoyama, Hitoshi Koizumi
1Department of Obstetrics and Gynecology, Teikyo University, School of Medicine, Tokyo, Japan. yonchi@med.teikyo-u.ac.jp
Abstract:
Using saline solution including exuded extract from uterine curettings, hCG tests were performed in 63 women in whom there was a suspicion of ectopic pregnancy, and their results correlated highly with the microscopic existence of chorionic villi and trophoblasts. Ectopic pregnancy can be mostly excluded when the test is positive, and either ectopic pregnancy or complete abortion is probable when it is negative.

