Fig. 9 (A) Generation of NO quantified by PTIs being formed in the reaction of PTIOs plus NO released from the NONOate The reaction is initiated by the addition of various concentrations of NONOate (structure given in the inset) to PTIO (13.5ƒÊM) solution in PBS (pH 7.4) and the mixture is incubated for 30 min at 37�Ž. (B) Correlation of the concentration of liposome PTI formed and NONOate added to the reaction as in (A). Three different concentrations of liposome PTIO are used for the reaction with NO. All data are means of three different experiments.