Research Article

Dynamics of Progesterone, TNF-α, and a Metabolite of PGF2α in Blood Plasma of Beef Cows following Embryo Transfer

Figure 4

Concentrations (Mean ± SEM) of TNF-α in pregnant and nonpregnant cows on d 7, d 14, and d 21. Pregnancy status day interaction ; CIDR = controlled internal drug release; GnRH = gonadotropin releasing hormone; hCG = human chorionic gonadotropin.