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U.S. officials call on Russia to suspend beef import rule
date:Dec 13, 2012
or ractopamine present no impact on human health.

Over the summer, a UN food standards body agreed on a set of residue limits for ractopamine: 10 micrograms per kilogram of pig or cattle muscle, 40 micrograms per kilogram in liver and 90 micrograms per kilogram of the animals' kidneys. Ractopamine is currently allowed to be used to increase lean muscle mass in cattle and pigs in about 25 countries, according to an information sheet from the Codex Alimentarius Commission, the UN food standards b

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