His father fell into a persistent vegetative state due to a traffic accident.

Basic oxides react with acids to produce salt and water.

This area is affected by radioactive fallout from past nuclear tests.

The study of filterable pathogens is an important part of virology.

She was diagnosed with polycystic ovary syndrome.

He explained the meaning of '唵阿毘羅吽欠'.

In chemistry class, I learned about the reaction of pyruvate.

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He is suffering from acquired immune deficiency syndrome (AIDS).

She was diagnosed with polycystic ovary syndrome.