• OB's perform them
• OB/GYNs perform them
• Prenatal procedures performed by OBs
• Prenatal procedures, informally
• Prenatal tests, for short
• Procedures done by OBs
• Short medical procedures?
• Some pregnancy tests, for short
• Tests done by OB-GYNs
• Thin innermost membranous sac enclosing the developing embryo in higher vertebrates (Amniota reptiles
• Birds
• Mammals)
m анат.
амнион; водная оболочка