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MedicineEndocrinologyObstetricsPrenatal DiagnosisReproductive EndocrinologyReproductive MedicinePregnancyPregnancy DiagnosisPregnancy EndocrinologyRuminant Reproductive MedicineSheep PhysiologySheep ReproductionHormonal Assays In RuminantsProgesterone AssayProgesterone MeasurementReproductive DiagnosticsReproductive Hormone Assays
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Shengsong Xie, Brooks Low, Robert J. Nagel et al. · Proceedings of the National Academy of Sciences · 1991 · 243 citations