Abstract
The discovery by immunochemical methods of a fetal serum protein that is said to be a highly specific indicator of primary hepatoma in adults (see page 984) should stimulate a more intensive search for yet other hallmarks of disease in man. It also emphasizes the fact that the serum proteins of the fetus and the young of mammals warrant more study. The earlier resolution of normal serum into more than 35 distinct protein components demonstrated the discriminating sensitivity of immunoelectrophoresis. The function of most of these proteins is not yet established, nor has the metabolism of any but the main . . .

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