All organisms begin life as a microscopic cluster of cells. What happens next, as they develop, is a source of endless fascination for scientists.
"How do you go from just a ball of cells into an organism that has a shape, and fingers, toes and brain?" says Traci Stevens, associate professor of biology at Randolph-Macon College. "Cells have to move during development. How do they do it? What is involved? How does that ball of cells become an organized ...
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