#fetoprotein  any of several antigens that occur naturally in the fetus and sometimes in adults with cancer
  supertype:  antigen  any substance (as a toxin or enzyme) that stimulates the production of antibodies
  subtype:  alpha_fetoprotein__alphafetoprotein__alpha_foetoprotein__alphafoetoprotein__afp  an abnormally large amount of this fetoprotein in the fetus can signal an abnormality of the neural tube (as spina bifida or anencephaly)

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