| http://www.w3.org/ns/prov#value | - Merck???s share price climbed about 6% over the past 12 months, to reach $47.68 per share after hours Thursday.A global health care company, Merck operates in prescription medicines, vaccines, animal health, consumer care products and other areas of health, through four segments: Pharmaceutical, Animal Health, Consumer Care and Alliances.
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