In graduate school I swabbed a public toilet seat and wiped the specimen in a Petri dish. My cohort swabbed the bottom of their shoe and did the same. The public toilet specimen grew virtually nothing. The shoe specimen grew the equivalent of a rainforest in bacteria.
In graduate school I swabbed a public toilet seat and wiped the specimen in a Petri dish. My cohort swabbed the bottom of their shoe and did the same. The public toilet specimen grew virtually nothing. The shoe specimen grew the equivalent of a rainforest in bacteria.