Science Enhanced S&S Biology - Virginia Department of ...

If you choose to make and display a Winogradsky column, be aware that you may be growing deadly pathogens and that a very strong and unpleasant odor will be produced. Unknown bacteria. Microorganisms (bacteria) should always be treated with caution. When plating the unknown sample, do not touch the swab or Petrifilmâ„¢ plate with your fingers. ................
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