Fig. 3. Cell capture in microchambers.

a Labelling of MCF-7 cells with functionalized beads (diameter: 4.5 µm). A successfully labelled cell binds to at least one magnetic bead. The labelling of >90% of beads was achieved with an incubation time of at least 15 min at a concentration of 600 µg mL⁻¹. b The use of beads functionalized with specific antibodies allowed for the capture of mammalian (MCF-7), yeast (K. phaffii) and bacterial cells (E. coli) as well as lipid vesicles, and (c) larger target organisms yielded lower capture success