FEB 16, 2016 3:38 PM PST

What are those lines on my fingertips?

WRITTEN BY: Xuan Pham

About the Author
Doctorate (PhD)
I am a human geneticist, passionate about telling stories to make science more engaging and approachable. Find more of my writing at the Hopkins BioMedical Odyssey blog and at TheGeneTwist.com.
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