PGF2a: lutéolyse, ouverture col U et contractions U à mais suspicion dabsence de communication, et plusieurs oestrus ds lanamnese

Oestradiol: augmentations contractions U, ouverture du col, hautes doses nécessaires, effets sec importants: changement de conformation durable et  à long terme (relaxation pelvienne)

PGE2: relaxation col U, amplitude contractions U augmentées

Oxytocine: contractions U (récepteurs??), nécessite col U ouvert, aurait un effet selon impression clinique

Uterine Stones.
Segmental hypoplasia of the right horn of the uterus has led to the inspissation of the trapped uterine secretions. The mass subsequently broke up into smaller fragments, called hysteroliths or uterine stones. This cow cycled normally; notice CL on the left ovary. A follicle is present on the right ovary. Ovulation from the ovary ipsilateral to the incomplete horn would lead to a persistent CL due to the lack of prostaglandin F2alpha.