Key points are not available for this paper at this time.
Period before term (d) Fig. 1. Mean fetal concentrations of plasma cortisol with respect to time period (d) from delivery in the sheep (O), pig (0), man (A), guinea-pig (U), and horse (A). (I), Labour; B, birth. (Data from Silver & Fowden, 1988.
Fowden et al. (Sun,) studied this question.