EPSTEIN W V
Science. 1965 Jun 18;148(3677):1591-2. doi: 10.1126/science.148.3677.1591.
The umbilical cord blood of 47 out of 54 normal human infants contains hemagglutinating activity directed toward cells coated with a type-L Bence-Jones protein. This hemagglutinating material, in some instances, is present in cord blood in the absence of such activity in the maternal blood. Ultracentrifugation of cord serum in a sucrose gradient shows that the activity is associated with the macroglobulin fractions.
54名正常人类婴儿中，47名的脐带血含有针对L型本-周蛋白包被细胞的血凝活性。在某些情况下，这种血凝物质在脐带血中存在，而母血中却没有这种活性。在蔗糖梯度中对脐带血清进行超速离心表明，该活性与巨球蛋白组分有关。
