Associate Professor in Molecular Cell & Developmental Biology at the University of Texas at Austin, John Wallingford, makes his living using cutting-edge microscopic techniques to watch developmental events unfold in real time. Wallingford and his team study morphogenesis—the process by which embryos change shape as they develop from a fertilized egg to a multicellular organism with distinct tissues and organs. In this slideshow, watch some of Wallingford's stunning images that capture the early development of the frogs he studies.

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