@lukelea it's a marker in the urine, they say: http://www.cell.com/current-biology/abstract/S0960-9822%2815%2901016-7 … @MrRobertFord
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@lukelea it's a marker in the urine, they say: http://www.cell.com/current-biology/abstract/S0960-9822%2815%2901016-7 … @MrRobertFord