the relative contributions of ovarian failure and hypothalamic-pituitary dysfunction to the prolongation and cessation of estrous cycles were assessed by measuring the ability of acutely ovariectomized ( ovx ) middle-aged ( 12 mo ) mice to cycle after receiving grafts ( under the renal capsule ) of ovaries from young ( 2 mo ) mice .
C0747102
ovarian failure
C0029939
ovaries