Results .GPR55 deficiency leads to bradycardia, LV dilatation, pre-stretch and promotes a pro-inflammatory phenotype . We first confirmed Gpr55 mRNA expression in different organs of WT mice. Spleen and bone marrow showed the highest transcript levels, while low level receptor expression was noted in heart, liver, kidney and perigonadal visceral adipose tissue (see Supplementary Fig. S1 ). The analysis of sorted cardiac cells revealed detectable Gpr55 expression in all subsets isolat...