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Normalised tumour volume growth of the human GIST AHAX xenograft in mice receiving either imatinib (100 mg/kg/day) continuously, intermittently (one week on, one week off) or placebo (water). At the end of experiment, mice with particularly large tumours were scarified, causing a dip in tumour volume growth (the light grey symbols). The data are given as means and standard errors of the means.
