source	studies
Blood	129
Cultured cells	28
Liver	27
Feces	24
Urine	13
Heart	13
Muscle	13
Lung	12
Brain	12
Bacterial cells	11
Plant	11
Cecum	8
Cells	7
Intestine	7
Macrophages	6
Kidney	6
Cerebrospinal fluid	5
Eye tissue	5
Adipose tissue	5
Seeds	4
Saliva	3
Leaf	3
Bacterial media	3
Fibroblast cells	2
Erythrocytes	2
Epithelial cells	2
Bone marrow	2
Tail	2
Ovarian cancer cells	2
Colon	2