Figure 5-7. Mask used to prepare monoliths with a circular shape via photopolymerization of butyl methacrylate and ethylene dimethacrylate on the top face of a matrix-assisted laser desorption/ ionization (MALDI) plate (A), top view of the MALDI plate with monoliths (B), optical micrograph of two adjacent monolithic spots (C), and scanning electron microscope micrograph of macroporous structure of monolith C (D).

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