Figure 5From: The Tnfrh1 (Tnfrsf23) gene is weakly imprinted in several organs and expressed at the trophoblast-decidua interface Tnfrh1 mRNA is restricted to the deep layers of the placenta. Two placentas from 12.5 dpc conceptuses were frozen and divided into superficial (fetal) and deep (maternal; mat) halves prior to RNA extraction. The Ipl cDNA probe is a specific marker for the labyrinthine trophoblast and therefore hybridizes to the lanes from the superficial halves of the placentas.Back to article page