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FSHR expression in the labyrinth layer of mouse placenta. The labyrinth layer of placentae (15 dpc) of littermate wild-type (A) and Fshr−/− (B) mice were stained with anti-rat FSHR antibody. Images are shown at magnification ×600. Labeled are endothelial cells of mouse placental blood vessels (arrow labeled V) and mouse placental giant cells (arrowhead labeled GC). Corresponding negative controls stained with preimmune serum at the same concentration are shown in Supplemental Figure S8.
