四分孢子的显著特征是细胞核和高尔基体呈活跃状态。
The characteristics of tetrad was that the nucleus and Golgi bodies being in the active state.
在感染艾滋病毒的婴儿中，耶氏肺孢子菌是引起肺炎的最常见原因之一，占感染艾滋病毒的婴儿中所有肺炎死亡病例的至少四分之一。
in infants infected with HIV, Pneumocystis jiroveci is one of the commonest causes of pneumonia, responsible for at least one quarter of all pneumonia deaths in HIV-infected infants.
当小孢子从四分体中释放出来，特殊类型的外壁已经形成。
An extine with its specific pattern had already been formed, when microspores were released from tetrads.
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