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. 2018 May 14;9(5):572. doi: 10.1038/s41419-018-0635-5

Fig. 4. Analysis of tumor growth and lymph node invasion in an orthotopic xenograft model.

Fig. 4

a H&E staining of orthotopic xenograft in the tongue; bars, tongue weight of treated and untreated mice. b H&E staining of lymph node metastases. c Lymph node sonography and size determination on treated, untreated and control (no tumor) mice. Insets on the right, enlarged images. d Plot of lymph node size determined by sonography. e Lymph node weights of treated and untreated mice. f, g Analysis of combination index (CI) with compusin software for the combination polydatin/cisplatin and polydatin/afatinib. *p < 0.05, N = 3, error bar = 95% confidence