Biomarkers are measurable substances inside our bodies that give scientists and medical professionals a hint that we might have a certain disease, like cancer or Alzheimer’s, or have been exposed to a toxic chemical. Biomarkers are typically measured in blood samples or biopsies, which can range from a minimally invasive sample taken from the skin or a more invasive sample from within the body. Dr. Judith Su, the director of the University of Arizona’s Little Sensor Lab, is looking to change the way we detect biomarkers with her tiny, non-invasive optical sensors. Dr. Su is an assistant professor of optical sciences and biomedical engineering, assistant research scientist in chemistry and biochemistry, and BIO5 member.

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