SCIMAT / SCIENCE PHOTO LIBRARY SCIMAT / SCIENCE PHOTO LIBRARY
Biofilm formed by Serratia marcescens bacteria on a plastic peg was fixed using glutaraldehyde and Alcian Blue to preserve the bacterial glycocalyx. A human pathogen, S. marcescens are involved in nosocomial infections, particularly catheter-associated bacteremia, urinary tract infections and wound infections, and are responsible for 1.4% of nosocomial bacteremia cases in the United States. They are commonly found in the respiratory and urinary tracts of hospitalized adults and in the gastrointestinal system of children. Due to their ubiquitous presence in the environment, and their preference for damp conditions, S. marcescens are commonly found growing in bathrooms (especially on tile grout, shower corners, toilet water line, and basin), where they.
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