Fig 2.

Changes in (A) mean (± SEM) umbilical arterial (UA) blood flow, (B) venous (UV) blood flow (C) arterial oxygen saturation (SaO₂) and (D) cerebral tissue oxygenation (SctO₂) levels in RU486 plus saline treated lambs (open cycles) and RU486 plus oxytocin treated lambs (closed squares). Samples were collected during the first 5 minutes after oxytocin/saline administration and before ventilation onset (A & B) and for 5 minutes after ventilation onset (indicated by shaded area; C & D). Data from saline-infused control animals (no RU486) have been omitted for clarity.