source	studies
Blood	26
Feces	12
Urine	6
Bacterial cells	5
Cultured cells	4
Cecum	4
Liver	4
Lung	4
Unspecified	3
Kidney	3
Hep G2 cells	2
Plankton	1
Plant	1
Roots	1
Testes	1
Tissue	1
Tumor cells	1
Uterine fluid	1
Adipose tissue	1
Yeast cells	1
Bone marrow	1
Brain Cancer Cells	1
Breast milk	1
Cerebrospinal fluid	1
Colon	1
iPSC cells	1
Leaf	1
Lymphoma cells	1
Milk	1
Muscle	1