[ 125i ] iodo-2- [ beta- ( 4-hydroxyphenyl ) -ethylaminomethyl ] tetralone ( [ 125i ] heat ) , a selective , high affinity , high specific activity alpha 1-adrenoceptor ligand , is used to characterize alpha-adrenoceptors in the rat pineal gland .
C0001638
alpha 1-adrenoceptor
C0034784
alpha-adrenoceptors