Rat uterine myometrium contains the gap junction protein connexin45, which has a differing temporal expression pattern from connexin43. - Albrecht,J.L.; Atal,N.S.; Tadros,P.N.; Orsino,A.; Lye,S.J.; Sadovsky,Y.; Beyer,E.C. (Am J Obstet Gynecol, 1996)