the depressant effects of both amp and atp and the depressant phase of the biphasic effect of atp seem to be mediated through activation of p1-purinergic receptors because these effects were blocked by theophylline , a p1-purinergic antagonist [ burnstock ( 1978 ) in cell membrane receptors for drugs and hormones : a multidisciplinary approach , pp .
C0001471
p1-purinergic receptors
C0007603
cell membrane