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An electron microscopy image of a human hair cross section. The top region shows the external part of the hair strand (cuticle). The bottom shows the internal "macrofibrils" that exist in the cortex region. | Fabiano Emmanuel Montoro/LNNano, CNPEM
Tech

X-Ray Reveals Mysterious Component of Human Hair

Human hair has been studied for decades, which makes the discovery of a previously unknown component in it all the more surprising.

Published On 07/29/2015
2:00 PM EDT