Protective Effect of Melatonin on Acute Pancreatitis

Figure 3

Plasma level of melatonin in response to intraperitoneal (i.p.) administration of increasing doses of L-tryptophan. Melatonin plasma level was measured by RIA. Means ± SEM from the separate experiments, each performed on 8–10 rats. Asterisk indicates significant increase above the control value.