He specializes in the study of African history and politics.

He specializes in the study of star clusters and galaxies.

He specialized in the study of European music in the 20th century.

He specialized in the study of the nervous and optic systems.

So you are a biologist specializing in the study of ants.

Later he specialized in studies related to the phenomena of the tides.

He specialized in medieval studies and history of the papacy.

He specialized in the study of place names, particularly in the Midwest.

A music school is an educational institution specialized in the study, training and research of music.

He specializes in the study of ultrasound and imaging techniques.