In order to validate these results, the saliva samples were also analyzed by spectrophotometry (measuring absorbance at 548 nm; Thermo Genesys 10UV, Waltham, MA) using the Griess method
In order to validate theseresults, the saliva samples were also analyzed by spectrophotometry(measuring absorbance at 548 nm; Thermo Genesys 10UV,Waltham, MA) using the Griess method