One by one, the beasts sat down, scratching themselves and nursing small wounds.

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Some are only small sores, others are open wounds that can lead to serious complications.

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George Velmahos, chief of trauma surgery at Massachusetts General Hospital, where many of the wounded were taken, said some had blast wounds "as well as small metallic fragments that entered their body - pellets, shrapnel, nails".

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Bradford have little chance to lick their wounds - next up is the small matter of leaders and reigning champions Manchester United.

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In small amounts for short times TNF helps rouse the body to repair wounds and defend against germs.

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Stemnion, a small biotech firm in Pittsburgh, is working on using stem cells found in the placenta for healing wounds.

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Injuries caused by small ball bearings, which have been reported by some Boston hospitals, are potentially more troubling than larger shrapnel wounds, Dr. Sarani said.

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