MMP2 and spontaneous abortion: Relative expression of MMP2 (0.15 ± 0.01) and TGFB3 (0.79 ± 0.02) increased significantly (P < 0.01) in AUB females with miscarriage history compared to AUB females with no miscarriage (0.07 ± 0.01, 0.11 ± 0.01) history respectively.