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Plasma levels of des-acyl ghrelin-reactive IgG (a). Affinity kinetics between human des-acyl ghrelin and IgG showing: dissociation equilibrium constants (KD) (b), association rates (small Ka) (c) and dissociation rates (small Kd) (d). (Contr. n=14, AN n=12 and obese n=14, error bars, s.e.m.).
