Craig writes: “I’m a bioengineering undergrad and am currently interviewing for medical schools (MD/PhD programs). I got this tattoo of a resistor on my wrist, somewhat on a whim. I’ll always be a science geek at heart, however I truly desire to go into medicine in order to help people. The resistor is a sort of reminder to me to ‘resist’ any temptation of money, power, or anything else in order to do good science and to help others.”

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Originally published January 21, 2009. Copyright 2009 Carl Zimmer.