Saliva is a readily available biofl

Saliva is a readily available biofluid, which, compared to
blood and cerebrospinal fluid (CSF), can be obtained noninvasively.
The development of a successful salivary biomarker
for PD has the potential to be of major importance for diagnostics,
themonitoring of disease progression, and therapeutic
interventions. A recent study of PD patients demonstrated
that levels of salivary