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A Transplantable Spontaneous Osteogenic Sarcoma observed in the Muscle Tissue of an Albino Mouse R. G. HERNE, M. GREGOIRE & G. RONA Ayerst Research Laboratories, Montreal. OSTEOGENIC sarcomas attached to bone tissue have been reported in animals of different species. In 1936, Brues1 described a case of spontaneous osteogenic sarcoma in the jaw of a three-year-old grey rabbit. Barrett et al. reported an osteogenic sarcoma attached to the left femur of a C3H female mouse2. Osteogenic sarcomas have also been induced by radio-isotopes such as radium-226, strontium-90, calcium-45 (ref. 3) and strontium-89 (ref. 4). One case of osteogenic neoplasm arising from muscle tissue has been reported in man5. This tumour found in the thigh muscle had developed over a period of ten years and was believed to have followed an abscess in the muscle.
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