- Regulation and function of LEFTY-A/EBAF in the human endometrium. mRNA expression during the menstrual cycle, control by progesterone, and effect on matrix metalloprotineases. Cornet, P.B., Picquet, C., Lemoine, P., Osteen, K.G., Bruner-Tran, K.L., Tabibzadeh, S., Courtoy, P.J., Eeckhout, Y., Marbaix, E., Henriet, P. J. Biol. Chem. (2002)