TRANSPLANTATION OF THREE TUMORS INDUCED IN RATS BY DIMETHYLNITROSAMINEThree renal tumors induced in rats by dimethylnitrosamine were serially transplanted in animals of the same strain and one of these tumors was further studied in tissue culture. Originally, these tumors exhibited the histologic characteristics of two different types of stromal nephromas. Their growth rate tended to increase with the number of passages and the percentage of takes was higher in males than in females. In the course
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