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Protein chip detection of bacteria immunoseparated using in-house made magnetic beads. Fluorescence intensity showing the protein chip results of bacteria immunoseparated using three types of magnetic beads: (a) beads made using anti-Salmonella antibody indirectly bound by biotinylated group to streptavidin magnetic beads; (b) anti-Gram negative antibody; (c) Pathatrix beads. Scale: square size 4 mm.
