Table 1.
Types of Omics Study.
| Type of Omics | Definition | Molecule |
|---|---|---|
| Genomics | Complete DNA sequence of a cell or organism | DNA 
|
| Epigenomics | Reversible chemical modifications to the DNA sequence or histones | DNA 
|
| Proteomics | Complete set of proteins expressed by an organism | Protein 
|
| Transcriptomics | Complete set of RNA transcripts from a cell, tissue, organ, or organism | RNA 
|
| Metabolomics | Complete set of small molecule metabolites and substrates (e.g., amino acids, fatty acids, carbohydrates) | Metabolites 
|
| Microbiomics | Aggregate of microorganisms (microbiota) in the body—bacteria, viruses, fungi | Microorganisms 
|