source studies Blood 103 Cultured cells 31 Liver 30 Feces 12 Brain 11 Macrophages 10 Eye tissue 9 Adipose tissue 8 Unspecified 6 Muscle 5 Pancreas 5 Heart 5 Urine 4 T-cells 4 Microglia 4 Bacterial cells 4 Colon 3 B-cells 2 Ventricles 2 Breast cancer cells 2 Thyroid 2 Kidney 2 LNCaP cells 2 Hep G2 cells 2 Lung 2 Glial cells 2 Cells 2 Follicular fluid 2 Fly Head 1 Cecal content 1