Maternal serum total hCG and free beta-hCG in the first trimester from trisomy 21 pregnancies.
Eiben
B
B
Hammans
W
W
Keuter
S
S
Goebel
R
R
Louwen
F
F
Epplen
J T
JT
D000328:Adult; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000097:blood*; D004314:Down Syndrome / Q000097:blood* / Q000175:diagnosis; D005260:Female; D006801:Humans; D011247:Pregnancy / Q000097:blood*; D011261:Pregnancy Trimester, First; D012016:Reference Values
D018997:Chorionic Gonadotropin, beta Subunit, Human