A portion of amino acids 56-85 from the human protein was used as the immunogen for this AFP antibody.
Alpha-fetoprotein is a major plasma protein produced by the yolk sac and the liver during fetal life. This protein is thought to be the fetal counterpart of serum albumin, and the alpha-fetoprotein and albumin genes are present in tandem in the same transcriptional orientation on chromosome 4.