“This neuron tattoo was done a few months ago. When I was 18, my dad passed away from Lou Gehrig’s, which is a disease of motor neurons that innervate muscles. His battle with neurodegeneration helped me decide on a career in medical research, and I am currently pursuing my PhD in Neuroscience.”–Lindsay

I fell behind on my Friday uploads to the Flickr site. But the tattoos keep coming. We’re up to 97…so if you want to be tattoo #100, email me soon. 

Originally published November 20, 2007. Copyright 2007 Carl Zimmer.