Tasuku Honjo receiving his Nobel Prize from H.M. King Carl XVI Gustaf of Sweden at the Stockholm Concert Hall, 10 December 2018.

© Nobel Media. Photo: Alexander Mahmoud

Tasuku Honjo after receiving his Nobel Prize at the Stockholm Concert Hall, 10 December 2018.

© Nobel Media. Photo: Alexander Mahmoud

Physics laureates Gérard Mourou and Donna Strickland, chemistry laureates Frances H. Arnold, George P. Smith and Sir Gregory P. Winter, medicine laureates James P. Allison and Tasuku Honjo, and laureate in economic sciences William D. Nordhaus at the Nobel Prize award ceremony in Stockholm, Sweden on 10 December 2018.

© Nobel Prize Outreach. Photo: N. Adachi

Tasuku Honjo with relatives after the Nobel Prize award ceremony.

© Nobel Prize Outreach. Photo: A. Mahmoud

Tasuku Honjo and Sweden’s Princess Christina proceed into the Blue Hall of the Stockholm City Hall for the Nobel Prize banquet, 10 December 2018.

© Nobel Prize Outreach. Photo: D. Lepp

George P. Smith, Sweden's Princess Christina and medicine laureate Tasuku Honjo at the Nobel Prize banquet in the Stockholm City Hall.

© Nobel Prize Outreach. Photo: A. Mahmoud

Tasuku Honjo at the Nobel Prize banquet.

© Nobel Prize Outreach. Photo: D. Lepp

Tasuku Honjo delivering his speech of thanks at the Nobel Prize banquet in the Stockholm City Hall, 10 December 2018.

© Nobel Prize Outreach. Photo: D. Lepp

Tasuku Honjo having a look at the Nobel Foundation's guest book, signed by the laureates since 1952, during his visit to the Nobel Foundation on 13 December 2018.

© Nobel Prize Outreach. Photo: N. Adachi

Tasuku Honjo and his wife Shigeko Honjo showing the Nobel Prize medal during a visit to the Nobel Foundation on 13 December 2018.

© Nobel Prize Outreach. Photo: A. Mahmoud

2018 laureates assembled at the Nobel Foundation on 12 December 2018. From left: physics laureate Arthur Ashkin's son Michael Ashkin, laureate in economic sciences William D. Nordhaus, physics laureates Donna Strickland and Gérard Mourou, chemistry laureates Sir Gregory P. Winter and George P. Smith, medicine laureates Tasuku Honjo and James P. Allison, chemistry laureate Frances H. Arnold, laureate in economic sciences Paul M. Romer and peace laureate Denis Mukwege.

© Nobel Prize Outreach. Photo: A. Mahmoud

Tasuku Honjo delivering his Nobel Lecture on 7 December 2018.

© Nobel Media. Photo: Alexander Mahmoud

2018 medicine laureate Tasuku Honjo arrives at the Nobel museum.

© Nobel Media. Photo: Alexander Mahmoud

Like many laureates before him, Tasuku Honjo signed a chair at the laureates' get together at the Nobel Prize Museum in Stockholm on 6 December 2018.

© Nobel Prize Outreach. Photo: A. Mahmoud

Tasuku Honjo visiting the Nobel Museum.

© Nobel Media. Photo: Nanaka Adachi

Nobel Prize laureate Tasuku Honjo, surrounded by his team at Kyoto University, immediately after hearing the news that he had been awarded the 2018 Nobel Prize in Physiology or Medicine.

Tasuku Honjo taking phone interviews on the morning after the announcement of the 2018 Nobel Prize in Physiology or Medicine.

Photo: Kyoto University/David Kornhauser