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Prof. P. N. Gregoraci of the University of Naples announced in 1925 that all new growths, whether in man, lower animals or plants, owed their genesis to symbiosis between certain micro-organisms and the cells of the host. In man, according to the theory, the spirochete of syphilis accounts for the origin of 75 per cent of cancers, while the tubercle bacillus, the malaria parasite and the gonococcus are the exciting agents for the remainder. The author of the present treatise, inspired by the originator of the doctrine, as well as, according to a foreword, by the death of his mother from a malignant tumor, lays before the world his exposition of the thesis embellished with emotional excursions as uncritical as they are warm.
Neoplastogenesi: Di una soluzione veramente integrale del secolare problema riguardante l'origine dei tumori.. JAMA. 1932;99(1):63. doi:10.1001/jama.1932.02740530065038