release of growth hormone was increased by 45min incubation in 1mum-prostaglandin e ( 2 ) in the absence of theophylline , or in 10nm-prostaglandin e ( 2 ) , 0.1mum-prostaglandin a ( 1 ) or 1mum-prostaglandin b ( 1 ) in the presence of 0.5mm-theophylline .
C0033559
prostaglandin
C0033554
prostaglandin