He is a renowned jurist who has written many important legal books.

He is known as an expert in gerontology.

He is an expert in malacology, focusing particularly on the study of snails.

I love histology classes.

I will enter a university in Tokyo next year.

He is an expert in toxicology and conducts many studies.

He has a deep interest in astronomy.

I have a deep interest in French literature.

He is majoring in zoology at university.

He is good at performing opera.