Fig. 5.
Br-cAMP fails to prevent dopaminergic downregulation of α1D mRNA. Effect of 4 d treatment with 1 μm quinpirole on α1D mRNA levels in melanotropes cultured in the absence (control) or presence of 1 mm Br-cAMP (n = 3). Note that Br-cAMP had no statistically significant effect on quinpirole-induced downregulation of α1D mRNA (downregulation in the absence and presence of Br-cAMP was 34 ± 5 and 47 ± 4%, respectively; p > 0.05 for the comparison between these two percentage downregulation values).