Not really lab medicine, but still ultra cool. A team of scientists created the one-of-a-kind advertisements to promote director Steven Soderbergh’s film Contagion.

Using 35 strains of bacteria and fungi, a team of 25 microbiologists and immunologists tested different strains of bacteria to see which would work best at creating a message that would slowly grow into letters making up the film’s name. It should continue to grow until the message was illegible, much like an out of control disease.