Elevated Homocysteine by Levodopa Is Detrimental to Neurogenesis in Parkinsonian Model Shin, Jin Young ; Ahn, Young-Hwan ; Paik, Man-Jeong ; Park, Hyun Jung ; Sohn, Young H. ; Lee, Phil Hyu Abstract Publication: PLoS ONE Pub Date: November 2012 DOI: 10.1371/journal.pone.0050496 Bibcode: 2012PLoSO...750496S