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Acknowledgment The editors wish to thank authors David H. Chu and Cynthia A. Loomis for their excellent contribution to this text in the fifth edition. This chapter has been reproduced here in the sixth edition essentially unchanged. Introduction Skin is…

Introduction Development of the human embryo is a complex process involving highly orchestrated cell movements, proliferation, death, and differentiation. This chapter focuses on key events and regulatory mechanisms that result in skin morphogenesis, maintenance, and regeneration. The spectrum of cutaneous…