Medical Definition of alpha–fetoprotein
: a fetal blood protein present abnormally in adults with some forms of cancer (as of the liver) and normally in the amniotic fluid of pregnant women but with very low levels tending to be associated with Down syndrome in the fetus and very high levels with neural tube defects (as spina bifida) in which the tube remains open
Variants of alpha–fetoprotein
Seen and Heard
What made you want to look up alpha–fetoprotein? Please tell us where you read or heard it (including the quote, if possible).