Summary
AKR lymphoma cells derived from primary s.c. tumors (PT) and cells from their metastases (MT) were inoculated into recipient mice in order to compare their malignant behavior. A higher malignant potential of MT compared to PT cells was found. The results support the hypothesis that metastasis is a process of selection of cells possessing a potential to metastasize, which preexist in the primary tumor. In the model used, both the selection of ‘variants’ of malignancy and the assay of malignancy were as close as possible to natural tumor progression.
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The authors are thankful to Mrs Ora Gal-Mor and Mrs Elinora Miron for skillful technical assistance.
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Leibovici, J., Stark, Y. & Kopel, S. Different biological behavior of AKR lymphoma cells from primary and metastatic tumors. Experientia 41, 404–407 (1985). https://doi.org/10.1007/BF02004530
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DOI: https://doi.org/10.1007/BF02004530