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. 2001 Mar;132(5):999–1008. doi: 10.1038/sj.bjp.0703886

Figure 2.

Figure 2

Effects of PGE2, PGD2, PGF2α and iloprost on cyclic AMP formation by guinea-pig tracheal epithelial cells. Cells were pre-incubated for 15 min with rolipram (10 μM) and thereafter incubated with increasing concentrations of PGE2 (open circle), PGD2 (open squares), iloprost (solid circles) or PGF2α(open triangles). The conversion of [3H]-ATP to [3H]-cyclic AMP was assayed as described in Methods. The points are the means±s.e.mean of four determinations made with separate cell preparations.