A 29 year old woman with a family history of hemophilia B asked for prenatal diagnosis in the 8th week of pregnancy.

一例有血友病B家族史的29岁孕妇，于妊娠8周时要求对胎儿进行诊断。

youdao

Objective: to estimate the significance of using B-model ultrasonography to diagnose fetal malformation during pregnancy.

目的：探讨超声对孕期胎儿畸形的诊断价值。

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He said it was still unclear how folic acid - the synthetic form of folate, a B vitamin - worked in securing pregnancy.

他说目前仍不清楚叶酸这种叶酸酯的合成形式，是如何在保护妊娠安全中起作用的，叶酸酯是一种B族维生素。

youdao

Healthcare (currently only in China and Nigeria): Respiratory, Hepatitis B, female illnesses, male illnesses, pregnancy care, infant care.

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Autism risk might be cut nearly in half by making sure that mothers are taking supplements containing folic acid, a B vitamin, at the time of conception and in the early months of pregnancy.

FORBES: More Prenatal Vitamins Could Mean Less Autism, Study Says