“…Further investigations of endometrial blood vessels of the mare began in the 1990´s (Schoon et al 1994, Kriesten 1995, Grüninger et al 1998, Schoon et al 1999. During the 11 months of gestation of the mare, the endometrium accommodates analogously to the demands of highly increased vascular and glandular activity (Rossdale 1997). After foaling, the endometrium in general has a pre-gravid histological appearance by Day 14 post partum (Blanchard andVarner 1993, Steiger et al 2002).…”