Figure 3.

Expression of Cxs 37, 43, and 45 in the inner layer (INL) of the SC in human conceptuses. Thoracic segments of the SC of 6, 7.5, and 10 week-old human conceptuses were stained for Cx37, Cx43, and Cx45 (green), and protein gene peptide (PGP) 9.5 (red). The INL was presented on photomicrographs, with neuroepithelium (ne)—a layer in contact with the central canal (cc)—details shown in insets. Objective magnification—40× (scale bar = 20 µm); insets—100× (scale bar = 8 µm). Arrowheads are pointing to the granular pattern of Cx immunoreactivity in the cytoplasm of neuroepithelial cells.