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4T1 tumor growth. 4T1-RFP-luc cells were intraductally implanted into thoracic mammary glands of wild-type female BALB/C mice (n=6). A: Tumor growth was measured at the indicated time points by whole animal bioluminescence imaging as shown in a representative mouse. B: Bioluminescence expressed as photon flux per second (ph/s). C: Tumor growth was also measured semi-weekly using digital calipers. D: Tumor mass was quantified upon sacrifice. Data are presented as mean±standard error.
