Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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Inaba, N. et al.

The immunocytochemical localization of new soluble placental tissue proteins (PP14, 16, 17, 19, 20 and PP21) in human and cynomolgus monkey placentae.

Apparently Placenta-specific placental tissue proteins (PP14 and PP17) and solitary tissue proteins (PP16, 19, 20 and PP21) were investigated by avidin-biotin immunoperoxidase technique in the human and cynomolgus monkey placentae, membranes, decidua and umbilical cords. In human early placentae, PP14, 16, 17, 19 and PP21 were localized mainly in the cytoplasm of villous syncytiotrophoblast. PP20 was localized in the cytoplasm of basal chorionic trophoblasts. In human term placentae, positive stainings for PP16, 19 and PP21 were observed mainly in all kinds of trophoblastic cells, while positive stainings for PP14, 17 and PP20 were weakened in the trophoblastic cells. PP20 was clearly localized in the cytoplasm of Hofbauer-like cells in the villous stroma. The membrane of villous syncytiotrophoblast showed strongly positive stainings for PP21. PP21 was also localized in the membrane of amniotic and umbilical epithelium. The umbilical epithelium was cytoplasmically positive for PP14, 16 and PP20. Clear positive stainings for PP14 and PP21 were found in the cytoplasm of fetal polymorphonuclear neutrophils. All of the placental proteins were immunocytochemically positive in the decidual large cells. In the cynomolgus monkey placentae, similar immunostaining results were obtained. The monkey could, thus, serve as a model for the investigation of the placental proteins.[1]

References

The immunocytochemical localization of new soluble placental tissue proteins (PP14, 16, 17, 19, 20 and PP21) in human and cynomolgus monkey placentae. Inaba, N., Sato, N., Fukazawa, I., Ota, Y., Shirotake, S., Takamizawa, H., Nozawa, S., Bohn, H. Arch. Gynecol. (1987) [Pubmed]

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