from the resulting ki-values for the beta 1-selective drugs practolol ( 4.0 +/- 0.9 microm ) and metoprolol ( 0.19 +/- 0.07 microm ) and for the beta 2-selective drug ici 118,551 ( 0.30 +/- 0.06 microm ) it is concluded that the beta-adrenergic receptor in human placenta is of the beta 1-subtype .
C0001643
beta-adrenergic receptor
C0086418
human