Figure 3.
Thep5n-Iexpression of day-11 RBCs is induced by cAMP. (A) RBC preparations of day 11 were incubated for 4 and 12 hours with 10 μM NE, compared with a control without incubation (t0). (B) Northern blot analysis of 10 μg RNA per lane hybridized with probes specific for p5n-I and β-globin up to 4 hours with 1 μM NE and 10 μM propranolol (P). (C) RT-PCR result of a representative experiment and the EtBr fluorescence of the RT-PCR products (mean and SD of 3 experiments; **significant difference compared with the control [t0][P < .01]). (D) Result of 4 hours with 10 μM CPCA; RT-PCR result of 1 of 3 experiments is shown.