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Ethics declarations Ethics approval and consent to participate Parental informed consent was taken for all subjects and the study protocol has been approved by the Ain Shams Institutes Ethical Committee of Human Research

Insulin/IGF-1/FoxO signaling in nonhuman organisms Over 20 years ago it was discovered that mutations in daf-2 and age-1 double the lifespan in worms [3,4]

Flavonoids are phytonutrients which are very beneficial and commonly used in the development of cosmetic or cosmeceutical products due to their antiaging and antioxidant functions

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Plateable PHHs Hu8132 and Hu8163 (Thermo Fisher Scientific, catalog: HMCPMS) were thawed in cryopreserved hepatocyte recovery medium (Thermo Fisher Scientific, catalog: CM7000) and plated with Williams E Medium supplemented with primary hepatocyte thawing and plating supplements (Thermo Fisher Scientific, catalog: CM3000)