08/19/2010 09:55 am ET Updated May 25, 2011

How Clean Are New York Bars?

On Thursday, Aug. 5, between 9 p.m. and midnight, a half-dozen Observer interns flocked to 20 New York bars, armed with sterile swabs, to find out just how much grime lurked underneath their glasses.

A licensed New York City microbiology laboratory tested the samples, which were interpreted by Dr. Philip Tierno, director of clinical microbiology and immunology at New York University Langone Medical Center.

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