How do ranchers know if their cows are healthy? One way is to use a quick and easy blood test to measure the strength of cows’ immune systems, a method that avoids the overuse of antibiotics. The test was invented by Treen Huo, a professor at the University of Central Florida and twice a Cade Prize finalist.  Treen, who grew up on a farm in China said she was a very curious kid.  “To keep me out of trouble, “ Treen recalls, "my father had me learn music, painting, and Kung-Fu. I run my research like a piece of art, and my training in these things taught me to be tough and persistent.”