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Carl R. Woese Institute for Genomic Biology

Where Science Meets Society

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Echo Chambers
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Charles Lenell
Aaron Johnson Laboratory
Funded by the American Speech-Language-Hearing Foundation

Women and men's voices change differently with age as their nerves and muscles are affected by time and disease. The muscles of the voice box, the larynx, are hard to study in human patients, but easier to study in animal models. In this image of a rat larynx, different types of muscle fibers are labeled with red and green dye. By comparing the types and sizes of fibers in different animals, researchers can better understand the functioning of the larynx and how it changes with age.