- Coexpression of fractalkine and its receptor in normal human endometrium and in endometrium from users of progestin-only contraception supports a role for fractalkine in leukocyte recruitment and endometrial remodeling. Hannan, N.J., Jones, R.L., Critchley, H.O., Kovacs, G.J., Rogers, P.A., Affandi, B., Salamonsen, L.A. J. Clin. Endocrinol. Metab. (2004)