Fig. 2.

(a) Levels of G protein subunits in VTA and l-SN of cocaine overdose victims. Cytoloplasmic fractions were isolated as described in the Experimental procedures and 10 μg was separated on 10% SDS-PAGE to assess G protein subunit immunoreactivity. Data are expressed as mean ± SEM of the percentage of control values per quantity of protein loaded. (b) Representative bands from two cocaine overdose victims (+) and two control subjects (−).