Fig. 4From: Novel 24-h ovine model of brain death to study the profile of the endothelin axis during cardiopulmonary injuryELISA analysis of the endothelin axis. a Big endothelin concentrations. b endothelin-1 concentrations. Samples measured in EDTA plasma. Sheep 6 has been excluded from this analysis (brain dead group) due to technical errors in measurementBack to article page