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Additional Information

Competing Interests

The authors declare that they have no competing interests

Author Contributions

Sujeeth Parthiban conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

James M Hotaling performed the experiments, analyzed the data, wrote the paper, reviewed drafts of the paper.

Martin Kathrins wrote the paper, reviewed drafts of the paper.

Amit P Baftiri performed the experiments, contributed reagents/materials/analysis tools, reviewed drafts of the paper.

Sally Freels analyzed the data, wrote the paper, reviewed drafts of the paper.

Craig S Niederberger conceived and designed the experiments, wrote the paper, reviewed drafts of the paper.

Human Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

University of Illinois at Chicago Institutional Review Board.

Research Protocol # 2007 -0284

Data Deposition

The following information was supplied regarding data availability:

Raw data included as supplemental file.

Funding

The authors received no funding for this work.


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