If you weren’t already washing your hands constantly, this artwork by a lab technician showing just how many microbes are on a child’s unwashed hands will certainly make you keep scrubbing. Lab technician, Tasha Sturm, 52, waited until her son came in from playing outside before asking him to stick his hand on an agar plate to demonstrate the results in a microbiology class. The photograph was taken to show students in a microbiology lab how many colonies of fungi and yeast will grow on someone’s hand after being outside. And when the world is in the grip of a pandemic, with handwashing more important than ever, it’s certainly a timely reminder of just what is lurking on our skin. The stomach-churning results are enough to warrant washing your hands an extra couple of times a day, after showing an almost alien looking handprint of organisms living on her son’s hands.