title: Theriogenology question of the month. Confirmation of fetal viability via ultrasonography.
authors.affiliation: Department of Diagnostic Laboratory Services and Fields Services, College of Veterinary Medicine, Mississippi State University, MS 39762, USA.
authors.forename: C T
authors.initials: CT
authors.lastname: Estill
mesh_terms: D000818:Animals; D004285:Dogs / Q000502:physiology*; D005260:Female; D005328:Fetal Viability; D006340:Heart Rate, Fetal; D007752:Obstetric Labor, Premature / Q000517:prevention & control / Q000662:veterinary*; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000187:drug effects / Q000502:physiology*; D011374:Progesterone / Q000097:blood; D045167:Progesterone Congeners / Q000494:pharmacology / Q000627:therapeutic use*; D014204:Trenbolone Acetate / Q000031:analogs & derivatives* / Q000494:pharmacology / Q000627:therapeutic use; D016216:Ultrasonography, Prenatal / Q000662:veterinary*
chemical_list: D045167:Progesterone Congeners; C023445:altrenogest; D011374:Progesterone; D014204:Trenbolone Acetate