Imaging of initiator concentration for microarray.

<p>a) Fluorescent microarray scanner measuring relative abundance of initiator prior to polymerization labeling. Scale bar = 1 mm. b) Relative initiator concentration on surface for spots printed from the indicated concentration of biotinylated-BSA and reacted with the SA-initiator complex. Measurements based on initiator fluorescence (ex/em = 525/545 nm). c) Thickness of spots of indicated Bio-BSA concentration. Data are mean ± standard deviation. n = 16.