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However, these methods are labor intensive and time consuming. We evaluated a new method of differentiation between strains. A collection of Proteus spp. strains was analyzed by attenuated total reflectance Fourier transform infrared (ATR FT-IR) spectroscopy in the mid-infrared region. ATR FT-IR spectroscopy used in conjunction with a diamond ATR accessory directly produced the biochemical profile of the surface chemistry of bacteria. We conclude that a combination of ATR FT-IR spectroscopy and mathematical modeling provides a fast and reliable alternative for discrimination between Proteus isolates, contributing to epidemiological research.<\/jats:p>","DOI":"10.1177\/1753425916647470","type":"journal-article","created":{"date-parts":[[2016,5,10]],"date-time":"2016-05-10T23:38:34Z","timestamp":1462923514000},"page":"325-335","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":6,"title":["Chemometric analysis of attenuated total reflectance infrared spectra of\n                    <i>Proteus mirabilis<\/i>\n                    strains with defined structures of LPS"],"prefix":"10.1177","volume":"22","author":[{"given":"Paulina","family":"Zarnowiec","sequence":"first","affiliation":[{"name":"Department of Microbiology, Institute of Biology, Jan Kochanowski University, Kielce, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrzej","family":"Mizera","sequence":"additional","affiliation":[{"name":"Computer Science and Communications Research Unit, University of Luxembourg, Luxembourg"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Magdalena","family":"Chrapek","sequence":"additional","affiliation":[{"name":"Institute of Mathematics, Jan Kochanowski University, Kielce, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mariusz","family":"Urbaniak","sequence":"additional","affiliation":[{"name":"Institute of Chemistry, Jan Kochanowski University, Kielce, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wieslaw","family":"Kaca","sequence":"additional","affiliation":[{"name":"Department of Microbiology, Institute of Biology, Jan Kochanowski University, Kielce, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2016,5,10]]},"reference":[{"key":"bibr1-1753425916647470","doi-asserted-by":"publisher","DOI":"10.1099\/00221287-137-1-69"},{"key":"bibr2-1753425916647470","doi-asserted-by":"publisher","DOI":"10.1038\/srep03278"},{"key":"bibr3-1753425916647470","doi-asserted-by":"publisher","DOI":"10.1016\/j.mimet.2011.01.009"},{"key":"bibr4-1753425916647470","doi-asserted-by":"publisher","DOI":"10.2174\/0929867322666150311152800"},{"key":"bibr5-1753425916647470","first-page":"102","author":"Naumann D","year":"2000","journal-title":"Encycl Anal Chem"},{"key":"bibr6-1753425916647470","doi-asserted-by":"publisher","DOI":"10.1186\/1472-6882-14-289"},{"key":"bibr7-1753425916647470","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0104654"},{"key":"bibr8-1753425916647470","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0143425"},{"key":"bibr9-1753425916647470","doi-asserted-by":"publisher","DOI":"10.1039\/b408169b"},{"key":"bibr10-1753425916647470","doi-asserted-by":"publisher","DOI":"10.1128\/AEM.71.8.4318-4324.2005"},{"key":"bibr11-1753425916647470","doi-asserted-by":"publisher","DOI":"10.1128\/AEM.02946-09"},{"key":"bibr12-1753425916647470","first-page":"423","volume":"12","author":"Michelim L","year":"2008","journal-title":"Brazilian J Infect Dis"},{"key":"bibr13-1753425916647470","doi-asserted-by":"publisher","DOI":"10.1186\/s12866-015-0384-x"},{"key":"bibr14-1753425916647470","first-page":"713","volume":"60","author":"Lechowicz \u0141","year":"2013","journal-title":"Acta Biochim Pol"},{"key":"bibr15-1753425916647470","doi-asserted-by":"crossref","unstructured":"Drzewiecka D. 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