Image: Microbiology PhD Candidate Sohyun (Gabi) Cho Featured in USDA Agricultural Research Service article. Gabi is a PhD student in Dr. Jonathan Frye's lab. Healthier Waterways, Healthier You ARS researchers are studying bacterial levels in the waters from the Upper Oconee watershed. Analysis of samples from the watershed will determine the levels of bacteria in waters around Athens, Georgia. Click Here to read the entire article.