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Ashani Weeraratna is an associate professor in the Tumor Microenvironment and Metastasis Program of The Wistar Institute Cancer Center and a member of Wistar's Melanoma Research Center. Her laboratory focuses on unraveling the molecular mechanisms involved in melanoma metastasis with a particular emphasis on the Wnt signaling pathway, which comprises a family of proteins that have been shown to have great implications in fetal development as well as cancer. Another major interest of her laboratory lies in examining the link between changes in the tumor microenvironment, such as hypoxia, and aging associated senescence, and melanoma progression.
The microscope in the image belonged to William E. Horner, M.D., a collaborator with Caspar Wistar, M.D., in the early 1800s.
Dr. Horner, a lecturer at the University of Pennsylvania, was a pioneer of the use of microscopes in anatomical and medical research. He authored Special Anatomy and Histology, a seminal text on the subject.