Veterinary public health explores the ways to extend human life and promote human health by removing health hazard elements. Our main efforts have been concentrated on securing food hygiene, zoonoses, molecular epidemiology & virulence evolution of zoonotic pathogens, endocrine disruptors and safety estimation of new materials. Current emphasis is placed on stem cell research related to differentiation, proliferation as well as mechanistic studies on differentiation and self-renewability of stem cells using epigenetic tools such as histone modification and microRNAs. We have been intensively studying to treat incurable diseases using adult stem cells from various tissue such as umbilical cord blood, adipose tissue, bone marrow and amniotic membrane or fluid. Furthermore, we have explored several novel factors regulating the aging of stem cells, which can be used for the prevention of human aging.