I'm in no way belittling your effort, but this guy looked so stock-photo-ish that it took about a minute to google him.
![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fimage.shutterstock.com%2Fdisplay_pic_with_logo%2F944902%2F150612290%2Fstock-photo-dna-molecules-and-men-150612290.jpg&t=665&c=hEPbBwQQvJ3LQA)
...And since i work with stock images often, I know the shutterstock
image license doesn't cover an image being reproduced more than 2500 times, and other redistibution-in-part restrictions are in there too, all of which nixes the use of their images for coin logos.
![Sad](https://bitcointalk.org/Smileys/default/sad.gif)
An original design involving a 3d human and protein chains would be most tasty though. I wanted to render protein coils in 3D for my design, but the numerous images from Stanford's folds proved material enough.