Fiber-optic-based detection of L. monocytogenes after immunomagnetic capture with MyOne-2D12 or MyOne-3F8 from (a) buffer, (b) soft cheese, or (c) hotdog samples. (a) Fibers were coated with MAb-2D12 and 3F8. (b, c) Fibers were coated with MAb-2D12 only. Cy5-conjugated MAb-2D12 was used as a reporter in all experiments. Data (signals; pA) are the mean of 3 fibers. Bars marked with different letters are significantly different (P < 0.05). Blank, PBS only.