Figure 1From: Bovine trophoblastic cell differentiation and binucleation involves enhanced endogenous retrovirus element expressionThe gene expression levels of ERV elements during early pregnancy. Quantitative analysis of the four ERV elements was performed by qRT-PCR, and their expression levels were normalized to GAPDH mRNA expression. The bar graph shows mean ± SEM values. Data labeled with different letters are significantly different from each other (P < 0.05). EM, elongated embryo; FM, fetal membrane; ENDO, endometrium.Back to article page