finally , the potency of cl218,872 to displace 3h-diazepam was not effected by the 3h-ligand concentration ( 0.5 nm or 5.0 nm ) , suggesting that types 1 and 2 benzodiazepine receptors are not identical to the high and low affinity 3h-diazepam binding sites we have previously identified in the ovine brain .
C0086045
concentration
C0006104
brain