Transparent zebrafish, described in the Feb. 7 issue Cell Stem Cell, are allowing researchers at Children's Hospital Boston to directly view internal organs and observe processes such as tumor growth in real-time.
While scientists have studied disease in the embryos of zebrafish, which are naturally transparent, their bodies turn opaque as adults. The newly created fish stays transparent throughout its lifetime. "Everything after four weeks has been invisible to us," said study team member Richard White, a clinical fellow in the Stem Cell Program at Children's Hospital Boston.
White created the transparent fish, which he nicknamed Casper, by mating two …
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