There is evidence from numerous studies, using both psychophysical and electrophysiological approaches, that impairment of olfaction is a characteristic and early feature of Parkinson's disease (PD).

A novel therapy designed to clear toxic clumps of a protein thought to be responsible for Parkinson's disease has ... in ...

Standard indirect immunoperoxidase protocols were applied using antibodies against olfactory markers and α-synuclein ... More than 96% of patients with Parkinson's disease (PD) present with ...