Tention, was found only at a very low levels,Circ Res. Author manuscript; available in PMC 2012 July 22.Zhang and MendePageconsistent with Figure 2 and other studies showing lack of RGS4 in the ventricular myocardium, but enrichment in the sinoatrial node 23, 24.NIH-PA Author Manuscript NIH-PA Author Manuscript NIH-PA Author ManuscriptRGS protein expression profiles are most often based on Norther