Letter: Orwellian vision

Sir: With reference to the article on pigs acting as donors for transplant surgery (report, 17 December), I refer you to the end of George Orwell's Animal Farm: "The creatures outside looked from pig to man, and from man to pig, and from pig to man again, but already it was impossible to say which was which."

ALAN RAYNER

Dorchester, Dorset

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