Matrix metalloproteinase MMP-2 and MMP9 detected on FT on follicular, periovulatory and luteal phases. MMP-2 and MMP-9 standard (Std) obtained from a commercial company. (A) Representative gelatin zymogram of three separate experiments illustrating pro and active MMP2 and MMP9 throughout the menstrual cycle. Data shows nine independent experiments. Each sample was assayed in duplicate.