K. Shimizu et al., EXPULSION OF THE PLACENTA FROM THE UTERUS IS THE PRINCIPAL INITIATOR FOR COLLAGEN DEGRADATION IN MOUSE UTERUS, Experientia, 51(2), 1995, pp. 123-125
In unilaterally pregnant mice, collagen degradation in the non-pregnan
t uterine horn was not initiated by removal of the fetus only but by r
emoval of both the fetus and placenta. The results indicate that expul
sion of the placenta from the uterus is a principal factor in the init
iation of the process of collagen degradation simultaneously in the wh
ole uterus.