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Why is O negative blood so special

Why is O negative blood so special

http://www.wzzm13.com/video/2416413571001/1/Why-is-O-negative-blood-so-special http://bcdownload.gannett.edgesuite.net/wzzm/34295214001/34295214001_2416466328001_th-51a534e2e4b02aab94c4abe3-590065942001.jpg?pubId=34295214001 Why is O negative blood so special Why is O negative blood so special WZZMmibloodHealthgrandrapidsNews 03:22

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