 OregonLive.com | Riding TriMet? Plenty of bugs could be sharing your seat OregonLive.com By Joseph Rose, The Oregonian View full sizeBrian Feulner/ The OregonianPortland State University microbiologist Pamela Yeh (right) and PSU microbiology students examine a TriMet bus and take samples for testing. At The Oregonian's request, ... |