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Japanese specialist publisher of medical and life-science books and journals, known for the monthly journals Experimental Medicine and Resident Note.

Last updated September 29, 2026

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Overview

Yodosha Co., Ltd. (株式会社羊土社) is a Japanese specialist publisher founded on 7 February 1979 that focuses on medicine and the life sciences. Its catalogue spans basic and clinical medicine, textbooks, nursing, rehabilitation, nutrition and pharmacy, and it also publishes several periodicals. The company is headquartered in Japan and sells primarily into the Japanese market through bookstores, its own website and direct orders, with a membership programme that offers purchase benefits, digital back issues and newsletters. Yodosha's best-known title is the monthly journal Experimental Medicine (実験医学), first published in 1983 and described by the company as its first magazine; it covers frontier life-science research with contributions from leading researchers and abundant illustrations. The monthly Resident Note (レジデントノート), launched in 1999, is presented by Yodosha as Japan's first magazine for resident physicians, aimed at the practical needs of clinical practice with a focus on primary care and emergency medicine. A third periodical, G Note (Gノート), a bimonthly general-medicine journal, was launched in 2014. Beyond journals, Yodosha publishes a large list of books and textbook series. Its website lists categories including life science and basic medicine, clinical medicine, social medicine, general medicine, nursing, rehabilitation, nutrition, pharmacy, magazines, textbooks and science/medical reading. Named series include the Saikyo Step-Up series, the Muteki no Biotechnology series, the Experimental Handbook series, the Illustrated series and the Life Science English series in basic science, and the Surviving ICU, Visual Basic Procedures, Resident Check Note, General Practice and Emergency/ER Note series in clinical medicine. The publisher also runs advertising and promotional services tied to its journals, including magazine and book advertising, a weekly email newsletter reported to reach 32,000 subscribers, banner advertising on the Experimental Medicine Online site, recruitment and event listings, and webinars. Yodosha is a member of several Japanese publishing associations, including the Japan Medical Book Publishers Association, the Natural Science Book Publishers Association, the National Medical Book Trade Association and the National Publishing Association. It has appeared in annual publisher sales rankings compiled by booksellers such as Kinokuniya and Maruzen Junkudo, and in Amazon Japan's Japanese books and magazines category.

History

Yodosha Co., Ltd. was established on 7 February 1979 as a Japanese publisher specialising in medicine and the life sciences. From its base in Japan it built a catalogue of basic-medicine and clinical-medicine books, textbooks and periodicals, and it has since become a recognised name in Japanese medical publishing. The company's first magazine was the monthly Experimental Medicine (実験医学), launched in 1983. The title was named by Muramatsu Masami, who served as editorial adviser from the time of launch and was then a professor at the University of Tokyo; other early editorial advisers included life scientists and medical scholars such as Moriwaki Kazuo, Yamamura Yuichi and Ebashi Setsuro. Experimental Medicine presents frontier life-science research with contributions from leading researchers and extensive illustrations, and it has been extended through special and separate issues as well as digital channels. In 1999 Yodosha launched the monthly Resident Note (レジデントノート), which the company describes as Japan's first magazine for resident physicians. Aimed at residents and physicians in their twenties and thirties, it pursues practicality for the clinical setting, centring on primary care and emergency medicine, and is also read by supervising physicians and medical students. A third periodical, the bimonthly G Note (Gノート) for general medicine, followed in 2014. Alongside its journals, Yodosha developed numerous book and textbook series. Its website groups these into basic life-science and medical series — including the Saikyo Step-Up series, the Muteki no Biotechnology series, the Experimental Handbook series, the Experimental Method Q&A series, the Motto Yoku Wakaru! series, the Illustrated series, the Molecular Biology Lecture Broadcast series and the Life Science English series — and clinical series such as Surviving ICU, Visual Basic Procedures, Resident Check Note, Normal Image Comparison, Step Beyond Resident, Introductory Diagnostic Imaging, Gastrointestinal Endoscopy by Case, General Practice and Emergency/ER Note. Nursing, rehabilitation, nutrition and pharmacy series are also published. By the 2010s the company had grown into one of Japan's larger medical publishers by sales. It ranked 69th in Kinokuniya's 2017 ranking and 50th at Maruzen Junkudo, and in 2015 it placed 48th in Amazon Japan's Japanese books and magazines category. Yodosha is a member of the Japan Medical Book Publishers Association, the Natural Science Book Publishers Association, the National Medical Book Trade Association and the National Publishing Association. In the 2020s Yodosha continued to expand its digital and service offerings. Its website supports membership registration with benefits such as purchaser bonuses, access to supplementary videos and materials, purchase of digital back issues of Experimental Medicine and Resident Note, and newsletter subscriptions. It also sells advertising across its journals, a weekly email newsletter reported at 32,000 subscribers, banner advertising on Experimental Medicine Online, recruitment and event listings, and webinars that it plans and operates itself. Recent site notices include the publication of monthly and annual sales rankings, the establishment of website terms of use in 2026, and LINE integration for members.

  • Yodosha Co., Ltd. established as a Japanese medical publisher.

  • Monthly journal Experimental Medicine (実験医学) launched, the company's first magazine.

  • Monthly journal Resident Note (レジデントノート) launched, described by Yodosha as Japan's first magazine for resident physicians.

  • Bimonthly general-medicine journal G Note (Gノート) launched.

  • Ranked 48th in Amazon Japan's Japanese books and magazines category.

  • Ranked 69th in Kinokuniya's publisher ranking and 50th at Maruzen Junkudo.

  • Website terms of use established; membership LINE integration announced.

Products and positioning

Specialist publisher for medical and life-science professionals, researchers, physicians, residents and students in Japan, combining journals, books and textbooks with advertising and webinar services.

  • Experimental Medicine (実験医学)

    Monthly life-science journal featuring frontier research, with special and separate issues.

  • Resident Note (レジデントノート)

    Monthly clinical journal for resident physicians, focused on primary care and emergency medicine.

  • G Note (Gノート)

    Bimonthly journal on general medicine.

  • Saikyo Step-Up series

    Basic life-science and medical book series.

  • Muteki no Biotechnology series

    Biotechnology book series.

  • Illustrated series

    Illustrated medical and life-science book series.

  • Surviving ICU series

    Clinical series for intensive care.

  • Emergency/ER Note

    Clinical series on emergency medicine.

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