Fig. 4From: Histological analysis of arteriovenous anastomosis-like vessels established in the corpus luteum of cows during luteolysisChange in SMA-positive area and Acta2 mRNA expression in the CL during luteal stages. The percentage of the area immunoreactive for SMA (a) and the mRNA expression of Acta2 significantly increase in the regressed CL (b). Different letters show significant differencesBack to article page