Figure 4
Immunofluorescence of first trimester mesenchymal villi with antibody to IGF. (b) DAPI staining to show nuclei in the same section. Note that immunoreactivity is associated with a subpopulation of mesenchymal cells. The yellow asterisks mark the intervillous space, bordered by cyto- and syncytiotrophoblast. The red lines indicate the position of the sub-trophoblastic basement membrane in two adjacent chorionic villi.