alpha fetoprotein

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Noun1.alpha fetoprotein - an abnormally large amount of this fetoprotein in the fetus can signal an abnormality of the neural tube (as spina bifida or anencephaly)alpha fetoprotein - an abnormally large amount of this fetoprotein in the fetus can signal an abnormality of the neural tube (as spina bifida or anencephaly)
fetoprotein, foetoprotein - any of several antigens that occur naturally in the fetus and sometimes in adults with cancer