Two sublines of Walker 256 carcinoma have been characterized for their ability to metastasize and to induce cachexia. The invasive, metastasizing line A induced terminal anorexia in rats with a mean survival time of 27 +/- 1.5 days. The non-invasive line B induced early anorexia and cachexia with a mean survival time of only 15 +/- 1 days. At death, the line B tumor was still smaller than the line A one, and no metastases were detectable. These two sublines are discussed as a composite model for studying anorexia and cachexia together with invasion and metastasis.

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http://dx.doi.org/10.1177/030089168306900101DOI Listing

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