source	studies
Blood	48
Liver	18
Brain	11
Cultured cells	9
Eye tissue	8
Muscle	7
Macrophages	6
Heart	6
Feces	5
Adipose tissue	4
Lung	3
Ventricles	2
HeLa cells	2
Mitochondria	2
Optic nerve	2
Skin	2
T-cells	2
Intestine	1
Kidney	1
Blood Serum	1
Bacterial cells	1
Back of Eye	1
Microglia	1
Microglia cells	1
Tumor cells	1
Atria	1
Tumor tissue	1
Ovarian cancer cells	1
Retina	1
Urine	1