Fig. 6

a Photograph of microfluidic device featuring PLGA nanofiber arrays for on-chip rare cancer cell isolation and collection from whole blood samples. b Cell-capture performance measured at various contents of HCT116 cells in whole blood. c Schematic representation of the microfluidic device system with integration of air foam technology for cell release. d Capture and recovery yields of the microfluidic device with antibody-conjugated PLGA nanofiber arrays or a supported lipid bilayer (SLB) for EpCAM-positive HCT116 cells