Figure 1.

Characterization of uterine ISP expression. A- Western blot results showing the expression of the ISP1-ISP2 complex from mice uterine homogenates (lane 1) and intra-uterine fluid (lane 2) collected at the peri-implantation period (4.5 dpc – 5.5 dpc) probed with anti-ISP1 monoclonal antibody, B- Western blot results showing the expression of the ISP1-ISP2 complex from mice uterine homogenates (lane 1) and intra-uterine fluid (lane 2) collected at the peri-implantation period (4.5 d pc – 6.5 d pc) probed with anti-ISP2 monoclonal antibody, C- A zymogram showing in-gel enzyme activity of ISP1-ISP2 enzyme complex, carried out by using 5 mM BAPNA as substrate (lane 1- uterine tissue homogenate, lane 2- uterine fluid).