Before revision: There is evidence to show that some abnormalities in the developing embryo can be detected by cells in the uterus .This triggers epigenetic changes that prevent formation of the placenta, which prevents the embryo from implanting and leaves it to be removed in the next menstruation.
After revision: endometrial stromal, but only upon differentiation into decidual cellsThere is evidence to show that some abnormalities in the developing embryo can be detected by cells in the uterus .This triggers epigenetic changes that prevent formation of the placenta, which prevents the embryo from implanting and leaves it to be removed in the next menstruation.