Conversion of Lewis Lung Carcinoma into Ascitic Form

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Abstract
Lewis lung carcinoma (3LL), which has been most frequently used for various investigations of cancer, was converted to an ascitic form designated 3LL-SA. Ascites tumor cells showed a mixed population of single cells and about 10% islands, which were made up of 2 to about 50 cells. Transplantability was 100%. The biological and metastatic capacities were preserved in this line as shown by its ability to form hemorrhagic and necrotic tumors, and by its multiple lung metastases. Moreover, histological and ultrastructural characteristics of this tumor line were identical to those of the parental 3LL. Thus, it can be seen that 3LL-SA will be a useful tool for the study of cancer.