mRNA expression of TSP-1 and CD36 at the porcine maternal-fetal interface. TSP-1 (A), and CD36 (B) mRNA transcripts in non-pregnant endometrium and gd20 and gd50 endometrium (A,C) and chorioallantoic membrane (B, D) were quantified from healthy (HE, HCAM) and arresting (AE, ACAM) conceptus attachment sites. Transcript levels are relative to β-actin. Data was log transformed and analyzed by ANOVA. A p < 0.05 was considered significant. ACAM: arresting conceptus chorioallantoic membrane; HCAM: healthy conceptus chorioallantoic membrane; HE; healthy endometrium; AE: arresting endometrium.