The strip of a pillowcase stained with the blood of Abraham Lincoln is usually locked away in a display case or safe at the Grand Army of the Republic Museum and Library in the city's Frankford section.

But last night it was brought out as Exhibit A during a debate among members of the museum's board over whether to allow DNA testing of the relic to solve a medical mystery.

Was the 16th president dying of cancer, with less than a year to live, when he was shot by assassin John Wilkes Booth at Ford's Theatre?

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