In the secretory endometria of women, luminal epithelia exhibit gene and protein expressions that differ from those of glandular epithelia

Our results introduce a new concept that LE differentially expressed mRNAs are in the converse direction to that of GE, indicating different biologic processes despite the GE being continuous with the luminal monolayer. This probable distinction of biologic roles has not been noted previously. Further investigations must take cognizance of this observation.