Analysis of information sources in references of the Wikipedia article "Yamagiwa Katsusaburō" in English language version.
explores the candidacy of Yamagiwa, who had developed the world's first efficient method for producing cancer artificially in the laboratory by swabbing coal tar on rabbits' ears, which had stimulated activity among cancer researchers worldwide. Johannes Fibiger of Denmark, who discovered how to use parasites to cause cancer in rats two years before Yamagiwa's achievement, received the prize, probably because nominations were often greatly influenced by acquaintanceship, geography, and the marginalization that distance from other centers imposed on the Japanese.
Yamagiwa, then Director of the Department of Pathology at Tokyo Imperial University Medical School, had theorized that repetition or continuation of chronic irritation caused precancerous alterations in previously normal epithelium. If the irritant continued its action, carcinoma could result. These data, publicly presented at a special meeting of the Tokyo Medical Society and reprinted below, focused attention on chemical carcinogenesis. Further more, his experimental method provided researchers with a means of producing cancer in the laboratory and anticipated investigation of specific carcinogenic agents and the precise way in which they acted. Within a decade, Keller and associates extracted a highly potent carcinogenic hydrocarbon from coal tar. Dr. Yamagiwa had begun a new era in cancer research.
Yamagiwa, then Director of the Department of Pathology at Tokyo Imperial University Medical School, had theorized that repetition or continuation of chronic irritation caused precancerous alterations in previously normal epithelium. If the irritant continued its action, carcinoma could result. These data, publicly presented at a special meeting of the Tokyo Medical Society and reprinted below, focused attention on chemical carcinogenesis. Further more, his experimental method provided researchers with a means of producing cancer in the laboratory and anticipated investigation of specific carcinogenic agents and the precise way in which they acted. Within a decade, Keller and associates extracted a highly potent carcinogenic hydrocarbon from coal tar. Dr. Yamagiwa had begun a new era in cancer research.
