Glossary
Chorionic villi - finger- like tissue projections inside the uterusAmniotic fluid - fluid surrounding the fetus inside the uterine amniotic sac
Ultrasound guidance - Some times needles are inserted into the body for collecting tissues with the help of imaging studies such as ultra sound
Trimester - A three month duration ; usually associated with pregnancy
DNA - De oxy ribonucleic acid, the basic molecule of life