Fig. 9From: Investigation of hollow mesoporous NiFe2O4 nanospheres fabricated via a template-free solvothermal route as pH-responsive drug delivery system for potential anticancer applicationCell viability of MCF-7 cells after treatment with hollow mesoporous NiFe2O4 nanospheres and DOX-loaded NiFe2O4 nanospheres at different concentrations for 12Â h and 24Â hBack to article page