Overview: he doctors investigate what happens when blood is full of oxygen by whisking up a blood smoothie! Dr Xand visits a special medical collection of body parts to find out some ways in which human organs can go seriously wrong, and Dr Chris goes on call with an emergency ambulance team. Meanwhile, over in accident and emergency, a new admission has a seriously battered face after a bike accident, and another has a nasty infected finger from picking at his fingernails.