He may later specialize following completion of residency training in a military (or less often, civilian) program.

All the students take classes in dance, music, theater and visual arts, specializing later in one art form.

All players start as Xenians and specialize to another class later.

Austin sold the business, and the company later specialised in office furniture then interior design.

Originally a general farming community, it later specialized in vegetable growing, especially onion sets.

He changed his mind, and decided to study medicine, later specializing in neuroscience.

She qualified as a medical doctor, later specialising in contraception medicine.

He became a freelance journalist, later specializing in medical issues.

He later specialized in the relationship between social morality, faith and politics.

He graduated as a medical doctor, later specializing in psychiatry.