fetal antigens

https://doi.org/10.1351/goldbook.13147
Human cancer cell antigens, which cross-react serologically with antigens normally expressed by embryonic tissue, e.g., carcinoembryonic antigen (CEA), or $\ce{\upalpha\!\mbox{-}fetoprotein}$ (AFP).
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1165 [Terms] [Paper]