source studies Blood 32 Cultured cells 14 Liver 12 Lung 9 Eye tissue 7 Muscle 7 Brain 7 Adipose tissue 6 Heart 5 Macrophages 5 Feces 3 Unspecified 3 LNCaP cells 2 Hep G2 cells 2 Kidney 2 Ventricles 2 Intestine 2 Bone 1 Hippocampus 1 Jejunum 1 Bacterial cells 1 Atria 1 Lymphoma cells 1 Aortic valve tissue 1 Mitochondria 1 Amniotic fluid 1 Optic nerve 1 Ovarian cancer cells 1 Pancreas 1 Placenta 1