Sufficient caution is necessary when handling radioactive materials.

Due to his somnambulism, he may walk around unconsciously in the middle of the night.

He is undergoing regular medical check-ups due to sickle-cell anemia.

He was diagnosed with agranulocytosis.

General relativity is a theory of physics proposed by Einstein.

Special relativity is one of the fundamental theories of physics.

This area is seriously contaminated with radioactive isotopes.

He feels dizzy when he stands up suddenly due to orthostatic hypotension.

My father was diagnosed with ankylosing spondylitis.

In organic chemistry, pyruvic acid plays an important role.