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. Author manuscript; available in PMC: 2017 Jul 20.
Published in final edited form as: Bioconjug Chem. 2016 Jul 1;27(7):1713–1722. doi: 10.1021/acs.bioconjchem.6b00236

Figure 4.

Figure 4

Darkfield images of S. aureus captured by hemin microarrays using different concentrations and culturing media (standard (Fe+) or iron-deficient (Fe)), with 60-min. exposure times. FFT signals of respective images indicate a LOD of 103 cfu/mL for S. aureus grown in iron-challenged media, versus 104 cfu/mL for bacteria grown in standard media.