Directed by me, with the production help from (the wonderful) Ed Hille, a veteran staff photographer at the Philadelphia Inquirer, this video is dedicated to Helen C. Davies, a 93-year-old Professor of Microbiology at the University of Pennsylvania Perelman School of Medicine. You can read my profile on Helen here.

I want to thank the Microbiology Department at the University of Pennsylvania Perelman School of Medicine for the generous support, which made this project possible.