Figure 1

Plasma profiles of bPAG1, P4 & PG for Heifer-1 before and after cloprostenol treatment on day 0 (63 days post insemination). Foetal death occurred between the two arrows. P4 = progesterone; bPAG1 = bovine pregnancy associated glycoprotein 1; PG = the main metabolite of prostaglandin F2α