LETTER: Cloning a nightmare for sheep - and farmers

Sir: Your welcome to the life-saving pig (leading article, 7 March) comes a little late. The animal has been of service to sick humans for more than 20 years.

By the early 1970s plastic surgeons were using pigskins in the treatment of serious burns. The animal's carefully treated skin was found to have several advantages over the man-made dressings. Pain was reduced, so too was fluid loss and shock; there was less chance of infection and a much greater chance of quick healing.

Robin Laurence

Beaconsfield, Bucks