<unk>  is a technique used by plastic, maxillofacial and reconstructive surgeons to cause the body to grow additional skin, bone, or other<unk> s. Other biological phenomena such as<unk>  inflammation can also be considered<unk>  (see<unk>  inflammation below).
Tissue expansion
Necrosis
Organ gifting
Bone healing
Vasculogenesis
Craterization
Demineralization 
Cell death