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  4. Subcutaneous soft tissue tumours at the site of implanted microchips in mice
 
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1997
Journal Article
Title

Subcutaneous soft tissue tumours at the site of implanted microchips in mice

Abstract
An experiment using 4279 CBA/J mice of two generations was carried out to investigate the influence of parental preconceptual exposure to X-ray radiation or to chemical carcinogens. Mircochips were implanted subcutaneously in the dorsolateral back for unique identification of each animal. The animals were kept for lifespan under standard laboratory conditions. In 36 mice a circumscribed neoplasm occurred in the area of the implanted microchip. Females were significantly more affected than male mice. An influence of age or different treatment on the s.c. tumour incidence in two mice generation could be not observed. Macroscopically, firm, pale white nodules up to 25 mm in diameter with the microchip in its center were found. Microscopically, soft tissue tumours such as fibrosarcoma and malignant fibrous histiocytoma were detected.
Author(s)
Tillmann, T.
Kamino, K.
Dasenbrock, C.
Ernst, H.
Kohler, M.
Morawietz, G.
Campo, E.
Cardesa, A.
Tomatis, L.
Mohr, U.
Journal
Experimental and Toxicologic Pathology  
Language
English
ITA  
Keyword(s)
  • Soft tissue tumors

  • Tumors

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