Table 1. Expression of CD73 and CD39 on cardiac cells and circulating blood cells under basal conditions (n = 4–5).

cell populations		CD73 (%)	CD39 (%)
cardiac cells	cardiomyocytes*	0	0
	coronary endothelial cells	1.9±0.3	99.4±0.3
	CD31− CD45− cells	0	65.1±12.9
blood	erythrocytes	0	0
	platelets	0	35.2±5.1

^*Analysed by fluorescence microscopy.