Fig. 3.
Response to intravenous levodopa challenges (at 8 and 80 h) before (open circles) and after 4 years (crosses) of oral levodopa treatment. From [3]
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.