Refine your search
Availability
-
Authors
-
Topics
- Adult
- Biomarkers
- Chromosomes, Human, Pair 21
- Cloning, Molecular
- DNA Mutational Analysis
- Down Syndrome
- Female
- Humans
- Maternal-Fetal Exchange
- Placenta
- Pregnancy
- Prenatal Diagnosis
- RNA, Messenger
- Reverse Transcriptase Polymerase Chain Reaction
- Trophoblasts
- blood
- diagnosis
- genetics
- metabolism
- methods
- Show more
- Show less
-
Languages