AMNIOS

Thin innermost membranous sac enclosing the developing embryo in higher vertebrates (Amniota reptiles

• 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

• Birds

• Mammals)