CAMBRIDGE, Mass. — In 1993, Leonard Zon had 110 fish tanks and an idea.
Zon, a professor of stem cell and regenerative biology at Harvard University, thought to study human diseases in zebrafish. The freshwater fish, native to the streams and rice paddies of India and Myanmar, struck him as an ideal model animal for laboratories: Its eggs are transparent, allowing scientists to observe developing organs just by peering into a microscope, and female fish can lay hundreds of eggs a week. Read More
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