We tested poliomyelitis antibody of 42 newborn babies from the sera of umbilical cord, the babies before immunization and after that were followed up.
对42名婴儿的脐血于免疫前及免疫后跟踪测定了脊髓灰质炎（脊灰）抗体。
We tested poliomyelitis antibody of 42 newborn babies from the sera of umbilical cord, the babies before immunization and after that were followed up.
对42名婴儿的脐血于免疫前及免疫后跟踪测定了脊髓灰质炎（脊灰）抗体。
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