Selectivity and sensitivity screening of a G7 PAMAM dendrimer-immobilized platform with antibodies against surface markers using in vitro murine lung cancer cell lines, ED-1 and ED1-SC. a) A schematic illustration of this study investigating polymer chemistry, sensitivity, and specificity. b) Enhanced binding between anti-EGFR and cancer cells through dendrimer-mediated multivalent binding. c) Antibody screening for capturing of mouse lung cancer cells. All antibodies were functionalized on dendrimer-immobilized surfaces. Anti-EGFR antibody showed the highest binding with the both lung cancer cells, but not with HL-60, a leukocyte model. d) High recovery of the both cells from cell mixtures (in a range of 40-10,000 ED-1 or ED1-SC cells mixed with 1 × 107 HL-60 cells were used) using anti-EGFR. (n=3, All error bars: standard error (S.E.)).