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In page Leroy Hood:

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Hood advocates several practices in the burgeoning field of systems medicine, including: (1) The use of family genome sequencing, integrating genetics and genomics, to identify genetic variants associated with health and disease[18] (2) The use of targeted proteomics and biomarkers as a window into health and disease.[19][20] He has pioneered the discovery of biomarker panels for lung cancer[21] and posttraumatic stress syndrome.[22] (3) The use of systems biology to stratify disease into its different subtypes allowing for more effective treatment.[23][24] (4) The use of systems strategies to identify new types of drug targets to facilitate and accelerate the drug discovery process.[13]