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.
Scatterplots illustrate individual β2*-nAChR availability (VT/fP) in recently abstinent tobacco smokers (n = 24) in the thalamus (filled triangle), striatum (filled circle), cerebellum (filled inverted triangle), and cortex (average of parietal, frontal, anterior cingulate, temporal, and occipital regions; filled square) as a function of pain sensitivity and pain tolerance, measured in seconds.
