Fig. 4From: Porphyrin Iron-Grafted Mesoporous Silica Composites for Drug Delivery, Dye Degradation and Colorimetric Detection of Hydrogen PeroxideThe cell growth of A549 cells treated with different materials (a) and (b) different concentrations of DOX/FeIX-SBA-15 (a-f: 1.6, 3.2, 6.3, 12.6, 25.2 and 50.4 µg/mL) with the dose–response curves (c, d). The black line in Fig. a&b suggests the time point of adding materialsBack to article page