A surgical skin graft procedure where skin is taken from a donor of a different species (usually animal skin) to cover a wound or burned area in a human.
From Greek 'derma' (skin), 'hetero-' (different), and 'plasty' (surgical repair). This medical term emerged in the 19th century as surgeons developed techniques for transplanting tissue across species boundaries to save severe burn victims.
Pig skin is commonly used as a temporary dermatoheteroplasty because it's similar enough to human skin to protect wounds while the body heals, and we've been using animal skin grafts for burn treatment since the 1800s—it's one of medicine's oldest transplant techniques.
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