Japanese molecular immunologist Tasuku Honjo has jointly received this year's Nobel Prize in Physiology or Medicine.
Honjo and American scientist James Allison were awarded the prize for their work that led to a revolutionary cancer therapy.
The 2 scientists and other Nobel laureates attended a ceremony at a concert hall in the Swedish capital Stockholm on Monday.
Honjo and Allison rose when their names were called.
Honjo then stepped forward amid trumpet fanfare and received the medal and diploma from Sweden's King Carl XVI Gustaf.
Honjo is the 26th Japanese person to win a Nobel Prize. This includes Japanese-born scientists who became US citizens.
He's the 5th Japanese to win in the category of Physiology or Medicine.