Serum α₁ foeto‐protein (fetuin) in children with malignant ovarian or testicular teratomas. Preliminary results

In a study of sera of 93 children bearing various malignant tumours, the authors were able to detect by an immunological test an enthryonal protein, α1 foeto‐protein or fetuin, in one testicular and four ovarian embryonal carcinomas. Children bearing tumours other than malignant teratomas, and control children, gave negative results (with one exception in a normal 3‐day‐old infant). Such an immunological test, therefore, appears to have some diagnostic and prog nostic value which deserves further investigation.