Koji Kitajima

Demonstration of two different types of non-A, non-B hepatitis by reinjection and cross-challenge studies in chimpanzees

Hiroshi Yoshizawa, Yukio Itoh, Shigenori Iwakiri et al. · Gastroenterology · 1981 · 114 citations

Veterinary Medicine, Immunology, Infectious Diseases +8

Viruslike particles in a plasma fraction (fibrinogen) and in the circulation of apparently healthy blood donors capable of inducing non-A/non-B hepatitis in humans and chimpanzees

Hiroshi Yoshizawa, Yoshihiro Akahane, Yukio Itoh et al. · Gastroenterology · 1980 · 83 citations · Full text

Life Sciences, Infectious Diseases, Microbiology +10

Light-Harvesting Heptadecameric Porphyrin Assemblies

Kenji Sugou, Ken Sasaki, Koji Kitajima et al. · Journal of the American Chemical Society · 2002 · 58 citations

Natural Sciences, Biochemistry, Chemistry +17

Non-A, Non-B (Type 1) Hepatitis Agent Capable of Inducing Tubular Ultrastructures in the Hepatocyte Cytoplasm of Chimpanzees: Inactivation by Formalin and Heat

Hiroshi Yoshizawa, Yukio Itoh, Shigenori Iwakiri et al. · Gastroenterology · 1982 · 56 citations · Full text

Medicine, Infectious Diseases, Pathology +9

Clinical characteristics of the first three waves of hospitalised patients with COVID-19 in Japan prior to the widespread use of vaccination: a nationwide observational study

Nobuaki Matsunaga, Kayoko Hayakawa, Yusuke Asai et al. · The Lancet Regional Health - Western Pacific · 2022 · 43 citations · Full text

Veterinary Medicine, Infectious Diseases, Epidemiology +7