{HEAD ~ The invention} is {TAIL ~ a radioimmunoassay} based on the Aα epitope which allows the evaluation of the potency of elastase inhibitors to inhibit formation of cleavage products containing this neoepitope in a variety of in vitro cell biological situations 
is
{ HEAD ~ The invention } is { TAIL ~ a radioimmunoassay } based on the Aα epitope which allows the evaluation of the potency of elastase inhibitors to inhibit formation of cleavage products containing this neoepitope in a variety of in vitro cell biological situations
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