My father was diagnosed with ankylosing spondylitis.

Special relativity is one of the fundamental theories of physics.

General relativity is a theory of physics proposed by Einstein.

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.

In organic chemistry, pyruvic acid plays an important role.

It is important for us to respect cultural diversity and understand each other's differences.

She was diagnosed with polycystic ovary syndrome.

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