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<http://www.agweb.com/article/fda_approves_factrel\u00AE_for_use_with_lutalyse\u00AE_for_fixed-time_artificial_insemination/>
<http://www.agweb.com/livestock/dairy/article/fda_approves_factrel%C2%AE_for_use_with_lutalyse%C2%AE_for_fixed-time_artificial_insemination/>