immunoreactive dynorphin ( ir-dyn ) and opiate-like peptides ( olp ) were measured in acid ( hc1 ) extracts of human placenta by the use of an antibody to synthetic dyn- ( 1-13 ) and of the displacement of [ 3h ] -naloxone binding to rat brain homogenates , respectively .
C0013355
dynorphin
C0205753
opiate