9 0 6 ▁birth s ▁Category : 2 0 1 0 ▁death s ▁Category : S ierra ▁Club ▁pres idents ▁Category : American ▁cent en ari ans ▁Category : American ▁environmental ists ▁Category : American ▁conservation ists ▁Category : S ierra ▁Club ▁aw arde es ▁Category : Pres ident ial ▁Medal ▁of ▁Fre edom ▁recip ients ▁Category : Univers ity ▁of ▁Georgia ▁al umn i ▁Category : Har vard ▁Medical ▁School ▁al umn i <0x0A> </s> ▁U H - 2 3 2 ▁(( + )- U H 2 3 2 ) ▁is ▁a ▁drug ▁which ▁acts ▁as ▁a ▁sub type ▁select ive ▁mixed ▁ag on ist - ant agon ist ▁for ▁dop am ine ▁re cept ors , ▁acting ▁as ▁a ▁weak ▁partial ▁ag on ist ▁at ▁the ▁D 3 ▁sub type , ▁and ▁an ▁ant agon ist ▁at ▁D 2 Sh ▁aut ore cept ors ▁on ▁dop am iner g ic ▁n erve ▁terminal s . ▁This ▁causes ▁dop am ine ▁release ▁in ▁the ▁brain ▁and ▁has ▁a ▁stim ul ant ▁effect , ▁as ▁well ▁as ▁blocking ▁the ▁behaviour al ▁effects ▁of ▁c oca ine . ▁It ▁may ▁also ▁serve ▁as ▁a ▁ 5 - HT 2 A ▁re ceptor ▁ag on ist , ▁based ▁on ▁animal ▁studies . ▁It ▁was ▁investig ated ▁in ▁clin ical ▁tri als ▁for ▁the ▁treatment ▁of ▁sch iz op hren ia , ▁but ▁unexpected ly ▁caused ▁sympt oms ▁to ▁become ▁worse . ▁ ▁See ▁also ▁▁▁ 7 - OH - DP AT ▁ ▁Am is ulp