Related Experiment Video
Updated: Aug 19, 2026

Three-dimensional Rendering and Analysis of Immunolabeled, Clarified Human Placental Villous Vascular Networks
Published on: March 29, 2018
The expression of major histocompatibility antigens in the chorionic villi of molar placentae
Frozen sections of chorionic villi from molar placentae, ranging in menstrual age from 9 to 19 weeks, were studied by an immunoperoxidase technique using the monoclonal antibody to HLA-A,-B,-C antigens W6/32. The distribution of class I HLA antigens in molar placentae was compared with that in normal placental tissue of comparable menstrual age. The results showed that the distribution of these antigens in molar placentae is similar to that seen in normal placentae. In both tissues, class I HLA antigens were absent from the syncytiotrophoblast and the cytotrophoblast cells of the chorionic villi. However, these antigens were found to be present on cells in the mesenchymal stroma of both normal and molar chorionic villi.
Frozen sections of chorionic villi from molar placentae, ranging in menstrual age from 9 to 19 weeks, were studied by an immunoperoxidase technique using the monoclonal antibody to HLA-A,-B,-C antigens W6/32. The distribution of class I HLA antigens in molar placentae was compared with that in normal placental tissue of comparable menstrual age. The results showed that the distribution of these antigens in molar placentae is similar to that seen in normal placentae. In both tissues, class I HLA antigens were absent from the syncytiotrophoblast and the cytotrophoblast cells of the chorionic villi. However, these antigens were found to be present on cells in the mesenchymal stroma of both normal and molar chorionic villi.
More Related Videos
05:22Ex vivo Culture of Human Placental Explants for the Study of Viral Transmission Across the Maternal-Fetal Interface
Published on: December 30, 2025
10:13Purification of HLA-G+ Extravillous Trophoblasts from Human Term Placental Tissues for Phenotyping and Functional Analysis
Published on: March 13, 2026