948390.fig.004a
(a)
948390.fig.004b
(b)
948390.fig.004c
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948390.fig.004d
(d)
Figure 4: Binding of A20 cells to the functionalized silicon wafer. Images from optical microscope (20x enlargement) of the biochip functionalized with antibody anti-IgG (6,8 μM) and then incubated with A20 cells before washes (a) and after washes (b). Optical image after washes of the biochip functionalized with anti-IgG and incubated with CB1 cells (c). Optical image after washes of the biochip lacking anti-IgG and incubated with A20 cells (d).