Table 1.

Brief introduction of “Omics” and bioinformatics.

Omics	Objects	Technologies and methods	Advantages	Disadvantages	Literatures
Genomics (transcriptomics)	DNA, mRNA	Gene sequence, differential display, subtractive hybridization, EST, SAGE, chip technology	Gene polymorphism Susceptibility for prognosis and treatment Completed database High throughput	Nonassociation to regulation of life activities Nonconsistent strictly with mRNA expression	Wu et al. [11] Lu et al. [12]
Proteomics	Amino acids, protein	Cleaving isotope-coded affinity tag, 2D-MS, 2D-HCLP	Performer of life function	Instability Variability	Liu et al. [14] Wu et al. [15]
Metabonomics	Metabolites	NMR, GC-MS, LC-MS	Amplified action Simplicity to detect Less numbers Similarities in different species	Lack of beneficial supports Interferences by physiological factors	Van Wietmarschen et al. [17] Sun et al. [18] Liu et al. [19]
Bioinformatics	Data, bioinformation	Data mining, network analysis, topological comparison, and so on	Totally holism Exploration of the potential of information Focusing on function relation	Needing of self-development	Li [49]