Fig. 1From: Testing chemotherapy efficacy in HER2 negative breast cancer using patient-derived spheroidsMetabolic activity of the spheroids (cps) measured after incubation with solvent control grouped according to cell number per spheroid. Filled circle primary tumor, filled gray circle recurrent tumor samples, open triangle cell lines, line mean, *p < 0.05, **p < 0.001. cps counts per secondBack to article page