Fig. 4: Ex vivo real-time detection of NO generated from different organs.

a Time dependent current response of NO from the rat liver, in the addition of l-Arg and different concentrations of NO enzyme inhibitor l-NAME. b Time dependent current response of NO from rat liver, kidney, and heart, with l-Arg to promote NO release. c–f Time dependent current response of NO from different organs of a rabbit. c Brain; d heart; e liver; f kidney. Insets show photographs of NO detection of living organs in PBS. l-Arg is added to promote NO release. In a–f, n = 3 independent experiments.