different groups of animals were challenged with simultaneous inhalation of oa ( repeatedly at time 0 , 10 , 20 , 60 and 70 min ) together with inhibitors of pge-biosynthesis ( parachloromercurobenzoic acid = pcmb , copper sulfate = cu , copper dithiotreitol complex = cudtt , dithiotreitol = dtt and dimercaptopropanol = dmp ) or agents increasing pge production ( aurothioglucose = au , zinc dithiotreitol complex = zndtt and reduced glutathion = gsh ) .
C0056301
copper
C0009968
copper