41. The isoforms of TGF-? inhibit MMP7 mRNA and protein in the human endometrium via progesterone mediated pathway. 42. In human endometrium , the expression of MMP7 mRNA increases at menstruation and remains high during the proliferative phase. 43. The endometrium thickens to prepare for implantation, and the ovum travels down the Fallopian tubes to the uterus. 44. Other interests include research on hormone-dependent cancers, notably cancers of the breast, endometrium and ovaries. 45. The Dallas group found the enzyme in the endometrium , or lining of the uterus, in women with endometriosis. 46. Occasionally, it's that the lining of the uterus ( the endometrium ) grows into the uterine wall. 47. Once filled, the balloon conforms to the endometrium , the uterine lining and the primary source of menstrual bleeding. 48. The developing embryo takes about three days to reach the uterus and another three days to implant into the endometrium . 49. Persistent break through bleeding and amenorrhea commonly reflect an atrophic endometrium , which means a thin and not developed endometrium. 50. Persistent break through bleeding and amenorrhea commonly reflect an atrophic endometrium, which means a thin and not developed endometrium .