Correlation between maternal and fetal immunoglobulin E levels.
Immunoglobulin E (IgE) concentrations were measured in 157 paired samples of maternal-fetal sera. A correlation was found between maternal and fetal IgE levels, in contrast to earlier reports dealing with smaller series. The correlation is probably not due to placental transfer of maternal IgE but rather to genetic factors. The possible role of IgE in the fetal immune response is discussed.
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