Spray-on skin helps speed up healing

Spray-on skin has been tested on leg ulcer sufferers whose wounds are the slowest to heal.

US researchers have developed the spray, which consists of skin cells held in a "soup" of proteins associated with blood clotting.

When tested on 228 patients with the commonest leg ulcer types, it increased by half the number who were healed in 12 weeks. The findings are published in The Lancet.