Co-localization of Connexin 43 and Syndecan 3 in uterine tissue during normal labour. Sections from uterine tissue from women in normal labour (panel A-C), patients at term (panel D-F) and patients with prolonged labour (panel G-I) were obtained and prepared as described above. A monoclonal antibody against syndecan 3 was added, followed by Alexa Fluor 633 goat anti-rabbit IgG antibody. After that, a Connexin 43 antibody followed by Alexa Fluor 488 rabbit anti-mouse IgG antibody was added. The excitation for Connexin 43 (panel A, D and G) and Syndecan 3 (panel B, E and H) are shown. The merged picture demonstrates the co-localization in the tissue (panel C, F and I).