organ(s)
| System | Organ level 1 | Organ level 2 | Organ level 3 | Organ level 4 | Level | Pubmed | Species | Stage | Rna symbol
| Cardiovascular | heart | | | | highly |
| Homo sapiens | Fetal |
| Digestive | liver | | | | highly | | Homo sapiens | Fetal |
| | liver | | | | highly | | Homo sapiens | Adult |
| Lymphoid/Immune | spleen | | | | highly | | Homo sapiens | Adult |
| Nervous | brain | midbrain | substantia nigra | | moderately | | Homo sapiens | Adult |
| | brain | | | | highly |
| Homo sapiens | Fetal |
| | spinal cord | | | | lowly | | Homo sapiens | Adult |
| Reproductive | female system | ovary | | | highly | | Homo sapiens | Adult |
| | male system | testis | | | highly | | Homo sapiens | Adult |
| Urinary | kidney | | | | highly |
| Homo sapiens | Fetal |
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