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Micrometastasis in the PLN of LTZ mice is tumorigenic. PLN collected from triple transgenic mice were minced and s.c.-injected into the axillary region of irradiated wild-type mice. After 40 days, the mice were killed and examined for tumor growth. Shown are dissections of the axillary regions of two different mice that reveal tumor growth. (Magnification: ×2.)
