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Porcupine quills may hold key to less painful shots

Scientists believe porcupines may hold the key to less painful shots.

http://www.ksdk.com/video/2026952951001/1/Porcupine-quills-may-hold-key-to-less-painful-shots http://bcdownload.gannett.edgesuite.net/ksdk/35121359001/35121359001_2026954213001_th-50c68befe4b0ecaaef48ddeb-782203301001.jpg?pubId=35121359001 Porcupine quills may hold key to less painful shots Scientists believe porcupines may hold the key to less painful shots. quillsporcupineshotsHealthKSDK 00:46

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