Fig. 3

Optimization of parameters of the 3D cytosensor. a Qdot-anti-EpCAM conjugates concentration on the signal-to-noise (S/N) ratio of cytosensor. b The relationship among the electrospinning time, the PLGA nanofiber density and MCF7 capture density. c Immunoreaction time on the signal responses of cytosensor. They were performed by applying a 10⁵ cell mL⁻¹ to the substrate