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Beta 2 adrenergic receptors signal from the endosomes in cardiacmyocytes
Beta 2 adrenergic receptors are in an inactive conformation on recycling endosomes
Internalized beta 2 adrenergic receptors activate Gs proteins on the endosomes
Beta 1 adrenergic receptors signal from the plasma membrane and the Golgi membranes
Imaging zebrafish heart using a cardiac endothelial cell reporter line (flk1:GFP)