Comparison of OX40 and OX40L CT values in blood and saliva of healthy individuals and OSCC patients. a, OX40 CT values in blood and saliva of healthy individuals (HI) and OSCC patients. Mann Whitney U test revealed p value of 0.398 between Blood and Saliva of HI, while p value of <0.001 between blood and saliva expression in OSCC. b, OX40L CT values in blood and saliva of healthy individuals and OSCC patients. Mann Whitney U test revealed p value of <0.001 between Blood and Saliva of HI, while p value of <0.001 between blood and saliva expression in OSCC.